CN113783609B - Fault detection method, device, related equipment and storage medium - Google Patents

Abstract

The invention discloses a fault detection method, device, related equipment and storage medium. Wherein, the method includes: the first communication device acquires a first parameter; the first parameter represents the polarization state (SOP) of one optical signal among at least one optical signal received by the second communication device in the optical communication system and the The amount of variation between the SOPs of the local oscillator optical signals generated by the second communication device; judging whether the first parameter satisfies a preset condition, and obtaining a judging result; based on the judging result, determining the third communication in the optical communication system Whether the optical fiber on the current service link between the device and the second communication device fails.

Description

Fault detection method, device, related equipment and storage medium

technical field

The present invention relates to the field of communication technology, in particular to a fault detection method, device, related equipment and storage medium.

Background technique

In an optical communication system, in order to ensure normal transmission of optical signals between an optical sending device and an optical receiving device, an optical cable may be laid between the optical sending device and the optical receiving device. Usually, due to the influence of external weather environment and construction, the optical fiber in the optical cable will fail, and then the communication between the optical sending device and the optical receiving device will be interrupted. At present, it is artificially detected whether the optical fiber is faulty, and the service transmission between the optical sending device and the optical receiving device will be affected because the detection is not timely.

Contents of the invention

In view of this, the embodiments of the present invention expect to provide a fault detection method, device, related equipment, and storage medium.

The technical scheme of the embodiment of the present invention is realized like this:

At least one embodiment of the present invention provides a fault detection method, the method comprising:

Obtaining a first parameter; the first parameter represents the polarization state (SOP, State of Polarization) of at least one optical signal received by the second communication device in the optical communication system and the polarization state (SOP, State of Polarization) generated by the second communication device. The amount of change between the SOPs of the vibro-optical signal;

judging whether the first parameter satisfies a preset condition, and obtaining a judging result;

Based on the judgment result, it is determined whether the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system fails.

In addition, according to at least one embodiment of the present invention, said obtaining the first parameter includes:

Acquiring a first parameter sent by the second communication device;

Wherein, the first parameter is sent by the second communication device to the first communication device after receiving the at least one optical signal from the third communication device.

In addition, according to at least one embodiment of the present invention, it is determined that the optical fiber on the current service link between the third communication device and the second communication device is faulty; the method further includes:

determining a first distance between the location of the second communication device and the location of the third communication device;

Using the numerical value corresponding to the first parameter and the first distance, determine a fiber fault location on the current service link between the third communication device and the second communication device.

In addition, according to at least one embodiment of the present invention, using the value corresponding to the first parameter and the first distance to determine the distance between the third communication device and the second communication device on the current service link location of fiber optic faults, including:

calculating the difference between the value corresponding to the first parameter and the preset value to obtain the difference;

Quotienting the difference with the preset value to obtain a first ratio;

Based on the first ratio and the first distance, determine a fiber fault location on a current service link between the third communication device and the second communication device.

In addition, according to at least one embodiment of the present invention, the method further includes:

Acquiring the first duration for which the first parameter satisfies the preset condition;

judging whether the first duration is greater than or equal to a preset duration;

When it is determined that the first duration is greater than or equal to the preset duration, the determined optical fiber fault location is sent to the second communication device for the second communication device to issue a fault alarm.

In addition, according to at least one embodiment of the present invention, it is determined that the optical fiber on the current service link between the third communication device and the second communication device is faulty; the method further includes:

sending a notification message to the second communication device; the notification message is used to instruct the second communication device to start a backup service link, and receive at least one optical link sent by the third communication device through the backup service link Signal.

In addition, according to at least one embodiment of the present invention, it is determined that the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a failure; the method further includes:

determining a first angle; the first angle is used to adjust the SOP of the local oscillator optical signal generated by the second communication device;

generating first information; the first information includes the first angle;

sending the first information to the second communication device; the first information is used to instruct to adjust the SOP of the local oscillator optical signal generated by the second communication device, and use the adjusted local oscillator optical signal Demodulate the at least one optical signal.

At least one embodiment of the present invention provides a fault detection device, comprising:

An acquisition unit, configured to acquire a first parameter; the first parameter represents the SOP of one optical signal among at least one optical signal received by the second communication device in the optical communication system and the local oscillator optical signal generated by the second communication device The amount of change between the SOP;

A processing unit, configured to judge whether the first parameter satisfies a preset condition, and obtain a judgment result; based on the judgment result, determine the current service link between the third communication device and the second communication device in the optical communication system Whether the optical fiber on the road is faulty.

At least one embodiment of the present invention provides a first communication device, including:

A communication interface, configured to obtain a first parameter; the first parameter represents the SOP of one optical signal among at least one optical signal received by the second communication device in the optical communication system and the local oscillator optical signal generated by the second communication device The amount of change between the SOP;

a processor, configured to judge whether the first parameter satisfies a preset condition, and obtain a judgment result; based on the judgment result, determine the current service link between the third communication device and the second communication device in the optical communication system Whether the optical fiber on the road is faulty.

At least one embodiment of the present invention provides a first communication device, including a processor and a memory for storing a computer program that can run on the processor,

Wherein, when the processor is configured to run the computer program, it executes the steps of any method on the first communication device side.

At least one embodiment of the present invention provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above methods are implemented.

In the fault detection method, device, device, and storage medium provided by the embodiments of the present invention, the first communication device obtains a first parameter; the first parameter represents an optical signal in at least one optical signal received by a second communication device in an optical communication system. The amount of change between the SOP of the signal and the SOP of the local oscillator optical signal generated by the second communication device; judging whether the first parameter satisfies a preset condition, and obtaining a judging result; based on the judging result, determining the optical Whether the optical fiber on the current service link between the third communication device and the second communication device in the communication system fails. By adopting the technical solution of the embodiment of the present invention, the first communication device can determine the third Whether the optical fiber on the current service link between the communication device and the second communication device is faulty, compared with the method of detecting the optical fiber fault in the related art, the fault detection of the optical fiber can be automatically realized, and the detection It is more timely and can ensure the normal transmission of services.

Description of drawings

Fig. 1 is the realization flowchart of the fault detection method of the embodiment of the present invention;

2 is a schematic diagram of an optical communication system according to an embodiment of the present invention;

3 is a schematic diagram of an implementation process for determining the location of a fiber fault on the current service link between the third communication device and the second communication device according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of an implementation flow of sending the fiber fault location to the second communication device according to the embodiment of the present invention;

Fig. 5 is a schematic diagram of an implementation process of notifying the second communication device to enable the standby service link according to an embodiment of the present invention;

6 is a schematic diagram of a second communication device enabling a backup service link according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of an implementation process of notifying the second communication device to adjust the SOP of the local oscillator according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of the composition and structure of a fault detection device according to an embodiment of the present invention;

9 is a schematic diagram of the composition and structure of the fault detection system according to the embodiment of the present invention;

Fig. 10 is a schematic diagram of the composition and structure of the first communication device according to the embodiment of the present invention.

Detailed ways

Before introducing the technical solutions of the embodiments of the present invention, the related technologies will be described first.

In related technologies, an optical fiber is used as a physical layer medium of an optical transmission system, and is the basis of an entire optical communication system. With the development of optical network technology and the expansion of applications, massive optical fibers have been laid in various environments. As the network structure becomes increasingly complex and dynamic network reconfiguration becomes more frequent, the management of online optical cable resources and dark optical fiber becomes more and more important. Therefore, whether the optical fiber is in normal condition is an important guarantee for the stability of network operation. At present, due to external weather conditions, such as severe weather such as floods, earthquakes, and debris flows, as well as infrastructure construction and man-made sabotage, optical cables/optical fibers will be punched and dug, resulting in communication interruptions. In the optical cable interruption accidents, the proportion of optical cables being dug artificially due to engineering construction exceeds 60%, far exceeding the interruption caused by natural disasters and the aging of the optical cable itself. Therefore, how to effectively prevent the occurrence of optical cable interruptions caused by engineering construction is of concern to the industry technology. In related technologies, maintenance personnel use instruments to perform tests, locate optical fiber breakpoints, and then send maintenance personnel to repair optical cables, resulting in long interruptions of optical cables, which will affect services, and even cause service interruptions in severe cases.

Based on this, in the embodiment of the present invention, the first parameter is obtained; the first parameter represents the SOP of at least one optical signal received by the second communication device in the optical communication system and the generation of the second communication device. The amount of change between the SOPs of the local oscillator optical signal; judging whether the first parameter meets a preset condition, and obtaining a judging result; based on the judging result, determining the third communication device and the first communication device in the optical communication system Whether the optical fiber on the current service link between the two communication devices fails.

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

The embodiment of the present invention provides a fault detection method, as shown in Figure 1, the method includes:

Step 101: Obtain a first parameter; the first parameter represents the SOP of one optical signal among at least one optical signal received by the second communication device in the optical communication system and the SOP of the local oscillator optical signal generated by the second communication device the amount of change between;

Step 102: Judging whether the first parameter satisfies a preset condition, and obtaining a judging result; based on the judging result, determining whether the current service link between the third communication device and the second communication device in the optical communication system is whether the optical fiber is faulty.

Here, the second communication device may refer to a device in an optical communication system capable of receiving at least one optical signal sent by the third communication device. The third communication device may refer to a device capable of sending at least one optical signal to the second communication device in an optical communication system.

Here, in step 101, in actual application, the third communication device may be configured to generate the at least one optical signal, and modulate the at least one optical signal by using an external modulation method, and convert the modulated At least one optical signal is sent to the second communication device. The second communication device is configured to receive the at least one optical signal; in order to improve the signal-to-noise ratio performance, it can use the local oscillator optical signal generated by itself and the received at least one optical signal to perform coherent detection, and obtain at least one optical signal after demodulation One optical signal, at the same time, can also detect the SOP of any optical signal in the at least one optical signal, and calculate the variation between the SOP of any optical signal and the SOP of the local oscillator optical signal generated by the second communication device, Reporting the calculated variation to the first communication device. The first communication device is configured to acquire the change amount reported by the second communication device, and determine the current service link between the second communication device and the third communication device based on the change amount Whether the fiber is faulty. The change amount may refer to a difference between the SOP of one optical signal of the at least one optical signal received by the second communication device and the SOP of the local oscillator optical signal. Since the detection of the SOP can be realized by extracting the stock vector of the signal and calculating the degree of polarization (DOP, Degree of Polarization) according to the extracted stock vector, the amount of change can also refer to at least one path of light received by the second communication device The difference between the DOP of one optical signal in the signal and the DOP of the local oscillator optical signal.

Here, in step 102, in practical application, the local oscillator light may refer to a beam of laser light generated by the second communication device, and when the laser light is used as a reference signal, the laser light is referred to as local oscillator light. If the optical fiber on the current service link between the second communication device and the third communication device is not faulty, the SOP of any one of the at least one optical signal received by the second communication device and the original signal generated by itself The amount of change between the SOPs of the vibration-optical signals falls within the normal range of values; if the optical fiber on the current service link fails, the SOP of any one of the at least one optical signal received by the second communication device will change. It will change with the failure of the optical fiber, but the SOP of the local oscillator optical signal will not change with the failure of the optical fiber. The amount of change between the SOPs will exceed the normal value range. In this way, the SOP of the optical signal of the at least one optical signal received by the second communication device and the SOP of the local oscillator optical signal can be determined. Whether the optical fiber on the current service link between the third communication device and the second communication device fails.

Among them, usually, the SOP of one optical signal is closely related to the degree of ellipse of the fiber core. If the degree of ellipse of the end face of the fiber core does not change, the SOP of the optical signal will not change; however, when the external environment When the optical cable laid between the second communication device and the third communication device is affected to different degrees, the optical fiber in the optical cable will be squeezed, and then the end face of the optical fiber will be deformed, and finally the second communication device will receive the The variation between the SOP of any optical signal of at least one optical signal and the SOP of the local oscillator optical signal exceeds a normal value range. The impact of the external environment includes: the impact of ground construction on the buried optical cable laid between the second communication device and the third communication device, the vibration of the train passing by the second communication device and the third communication device The influence caused by the optical cable laid along the railway between the three communication devices, the impact caused by the waves hitting the submarine optical cable laid between the second communication device and the third communication device, the strong wind on the second communication device and the third communication device The impact caused by the overhead optical cables laid between the third communication devices.

In practical applications, after the second communication device receives at least one optical signal sent by the third communication device, it detects the SOP of any optical signal in the at least one optical signal, and calculates the SOP of the detected optical signal The change amount between the SOP of the local oscillator optical signal generated by the second communication device and the calculated change amount are reported to the first communication device, so that the first communication device can judge whether the second communication device communicates with the third communication device. Check whether the fiber on the current service link between devices is faulty.

Based on this, in an embodiment, the acquiring the first parameter includes:

Acquiring a first parameter sent by the second communication device;

Wherein, the first parameter is sent by the second communication device to the first communication device after receiving the at least one optical signal from the third communication device.

Wherein, the at least one optical signal may refer to at least one optical signal with different wavelengths.

Here, after the first communication device obtains the first parameter sent by the second communication device, it judges whether the value corresponding to the first parameter falls within the normal value range, and if it is determined that the value corresponding to the first parameter does not fall is within the normal value range, it is determined that the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a fault.

Taking the optical communication system shown in FIG. 2 as an example, the process of obtaining the first parameter by the first communication device and determining the current service link between the third communication device and the second communication device based on the first parameter are described. The process of whether the optical fiber is faulty is as follows:

As shown in Figure 2, the optical communication system includes: an optical transceiver device A, an optical transceiver device B and a management platform; the optical transceiver device A corresponds to the third communication device, the optical transceiver device B corresponds to the second communication device, and the management platform Corresponding to the first communication device; wherein,

The optical transceiver device A includes an optical transceiver unit A1, an optical transceiver unit A2, . . . , an optical transceiver unit An, and a multiplexer (OM). Wherein, the optical transceiver unit A1, the optical transceiver unit A2, ..., the optical transceiver unit An are used to generate N optical signals with different wavelengths; It is modulated onto an optical carrier and transmitted to optical transceiver device B.

The optical transceiver device B includes an optical transceiver unit B1, an optical transceiver unit B2, . . . , an optical transceiver unit Bn, and a demultiplexer (OD). Among them, the demultiplexer (OD) is used to separate the received N optical signals according to the wavelength; the optical transceiver unit B1, the optical transceiver unit B2, ..., one of the optical transceiver units Bn is used to calculate the separated optical signal The difference between the SOP of the signal and the SOP of the local oscillator optical signal, and report the calculated difference to the management platform; at the same time, it is also used to coherently couple the separated optical signal and the local oscillator optical signal to The coupled signals are coherently detected. Coherent coupling can refer to mixing the separated optical signal and local oscillator optical signal to obtain an intermediate frequency signal, and coherent detection can refer to demodulating the optical signal by using the intermediate frequency signal obtained by coherent coupling to obtain a demodulated after the optical signal.

The management platform is configured to receive the difference value reported by one of the optical transceiver unit B1, optical transceiver unit B2, ..., optical transceiver unit Bn of the optical transceiver device B, and determine whether the difference value satisfies a preset condition ; When the difference satisfies the preset condition, it is determined that the optical fiber on the current service link between the optical transceiver device A and the optical receiving device B has a fault.

Wherein, if the optical fiber on the current service link between the optical transceiver device A and the optical transceiver device B does not fail, the SOP and local oscillator optical signal of any one of the at least one optical signal received by the optical transceiver device B The SOP difference of the signal is in a balanced state, that is, the difference between the SOP of any one of the optical signals in at least one optical signal and the SOP of the local oscillator optical signal is in the normal value range, for example, the SOP of the local oscillator optical signal is 10 °, the SOP of one optical signal is 50°, the difference=50°−10°=40°, which is within the normal value range (0, 60°). If the optical fiber on the service link 1 between the optical transceiver device A and the optical receiving device B is continuously and abnormally squeezed by external forces, the SO and local oscillator of any optical signal in at least one optical signal The amount of change between the optical SOPs will change, that is, the difference between the SOP of any optical signal in at least one optical signal and the SOP of the local oscillator optical signal will exceed the normal value range, for example, the local oscillator optical signal The SOP of the optical signal is 10°, the SOP of one optical signal is 80°, the difference=80°−10°=70°, and the difference exceeds the normal value range (0, 60°).

In actual application, if the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system fails due to external force interference such as construction, the second communication device receives The amount of change between the SOP of any optical signal in at least one optical signal and the SOP of the local oscillator optical signal generated by the second communication device will exceed the normal value range, and the amount of change will increase with the transmission distance of the optical signal increases linearly, therefore, based on the distance between the location of the third communication device and the location of the second communication device, and the first parameter, the location where the optical fiber fails due to external force interference can be deduced .

Based on this, in an embodiment, it is determined that the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system fails; the method further includes:

determining a first distance between the location of the second communication device and the location of the third communication device;

Using the numerical value corresponding to the first parameter and the first distance, determine a fiber fault location on the current service link between the third communication device and the second communication device.

Specifically, using the value corresponding to the first parameter and the first distance to determine the fiber fault location on the current service link between the third communication device and the second communication device includes:

calculating the difference between the value corresponding to the first parameter and the preset value to obtain the difference;

Quotienting the difference with the preset value to obtain a first ratio;

Based on the first ratio and the first distance, determine a fiber fault location on a current service link between the third communication device and the second communication device.

Wherein, the preset value may refer to the maximum value of the normal value range of the change amount when no fault occurs in the optical fiber.

In an example, as shown in FIG. 3 , the process of determining the location of an optical fiber fault on the current service link between the third communication device and the second communication device is described, including:

Step 301: The first communication device obtains the first parameter sent by the second communication device; when the first parameter meets a preset condition, determine the current service link between the third communication device and the second communication device The fiber optics on have failed.

Here, the first parameter characterizes the amount of change between the SOP of the at least one optical signal received by the second communication device and the SOP of the local oscillator optical signal generated by the second communication device.

Here, the numerical value corresponding to the first parameter may be calculated according to formula (1).

A1＝S1-S2 (1)

Wherein, A1 represents the value corresponding to the first parameter; S1 represents the SOP of at least one optical signal received by the second communication device; S2 represents the SOP of the local oscillator optical signal generated by the second communication device.

Step 302: The first communication device determines a first distance between the second communication device and the third communication device; based on the value corresponding to the first parameter and the first distance, determine the location of the fiber fault.

Here, the optical fiber fault location can be calculated according to formula (2).

L2＝(A1-Z)/Z×L1 (2)

Wherein, L2 is the distance between the fault location of the optical fiber and the location of the second communication device; A1 represents the change amount; Z represents the maximum value of the normal value range of the change amount when the fiber does not fail , that is, the preset value; L1 represents a first distance between the second communication device and the third communication device.

It should be noted that if the second communication device can not only receive at least one optical signal sent by the third communication device, but also send at least one optical signal to the third communication device, the third communication The device can detect the amount of change between the SOP of any optical signal in the received at least one optical signal and the SOP of the local oscillator optical signal generated by the third communication device, so that the first communication device can obtain the third communication The variation reported by the device, and based on the variation and the first distance, determine the location of the fiber fault. The specific implementation process is the same as the process of determining the location of the fiber failure according to the first parameter, and will not be repeated here. Here, when the optical fiber fails, since the SOP of the optical signal increases linearly with the increase of the transmission distance, when the optical fiber fault location is relatively close to the second communication device, the SOP of the second communication device detects The amount of change is relatively small relative to the amount of change of the SOP detected by the third communication device.

Here, locating the fiber fault location based on the first parameter has the following advantages:

The external force intrusion causes the deformation of the end face of the optical fiber on the current service link between the second communication device and the third communication device, and the deformation of the end face of the optical fiber causes the SOP of any one of the at least one optical signal received by the second communication device to occur. Changes are correlated, and by detecting whether the SOP of any one of the optical signals received by the second communication device and the SOP of the local oscillator optical signal generated by the second communication device exceeds the normal value range, determine Whether the optical fiber is interrupted, when it is determined that the optical fiber is interrupted, locate the fault location of the optical fiber, so as to give early warning of the optical fiber interruption.

In practical applications, if the optical fiber on the current service link between the third communication device and the second communication device fails due to external force interference such as construction, the first communication device deduces that it is caused by external force interference. After the location of the fiber failure, in order to avoid interruption of the fiber, the location of the fiber failure may be sent to the second communication device for the second communication device to issue a fault alarm.

Based on this, in an embodiment, the method further includes:

Acquiring the first duration for which the first parameter satisfies the preset condition;

judging whether the first duration is greater than or equal to a preset duration;

When it is determined that the first duration is greater than or equal to the preset duration, the determined optical fiber fault location is sent to the second communication device for the second communication device to issue a fault alarm.

Here, in practical application, it is considered that some external force’s intrusion on optical fiber is not continuous. For example, the duration of strong wind’s intrusion on optical fiber may be relatively short. The business may not be greatly affected; however, some external forces intrude on the optical fiber continuously. The service transmitted on the current service link will be greatly affected. Therefore, the first communication device may determine whether the first duration for which the first parameter satisfies the preset condition is greater than or equal to the preset duration. When determining that the first When the duration is greater than or equal to the preset duration, the determined location of the fiber failure is sent to the second communication device for the second communication device to issue a fault alarm, thereby avoiding interruption of the fiber and ensuring normal transmission of services.

In an example, as shown in FIG. 4, the process of sending the fiber fault location to the second communication device is described, including:

Step 401: The first communication device obtains the first parameter sent by the second communication device; when the first parameter meets a preset condition, determine the current service link between the third communication device and the second communication device The fiber optics on have failed.

Step 402: The first communication device determines a first distance between the second communication device and the third communication device; based on the value corresponding to the first parameter and the first distance, determine the location of the fiber fault.

Step 403: The first communication device acquires a first time period during which the first parameter satisfies a preset condition; when determining that the first time period is greater than or equal to the preset time period, the determined fiber fault location is sent to the second communication device.

Here, after the second communication device receives the location of the fiber failure, it can display the location of the fiber failure on the display interface, so that maintenance personnel can contact relevant personnel for emergency repairs in time, or replace the affected optical cable with a spare optical cable .

Here, sending the fiber fault location to the second communication device has the following advantages:

When the optical fiber on the current service link fails due to external force construction, the second communication device can generate an early warning signal in advance and send out the location information of the optical fiber failure to inform the network operation and maintenance personnel to take a corresponding emergency plan and contact the construction unit to suspend the construction. Avoid cutting the optical fiber in the optical cable, so as to ensure the normal transmission of services.

In practical applications, if the optical fiber on the current service link between the third communication device and the second communication device fails due to external force interference, the first communication device calculates the probability that the optical fiber fails due to external force interference After the location, in order to avoid interruption of service transmission, the second communication device may be notified to enable a backup service link for service transmission.

Based on this, in an embodiment, it is determined that the optical fiber on the current service link between the third communication device and the second communication device fails; the method further includes:

sending a notification message to the second communication device; the notification message is used to instruct the second communication device to start a backup service link, and receive at least one optical link sent by the third communication device through the backup service link Signal.

Here, in actual application, the third communication device may send at least one optical signal to the second communication device through the main service link and the backup service link, when the connection between the third communication device and the second communication device When the current service link, that is, the optical fiber on the main service link does not fail, the second communication device receives the at least one optical signal through the main service link, and the standby service link remains in the off state; when all When the current service link between the third communication device and the second communication device, that is, the optical fiber on the main service link fails, the second communication device receives the at least one optical signal through the backup service link, The standby service link remains open.

In an example, as shown in FIG. 5 , the process of notifying the second communication device to enable the standby service link is described, including:

Step 501: The first communication device obtains the first parameter sent by the second communication device; when the first parameter meets a preset condition, determine the current service link between the third communication device and the second communication device The fiber optics on have failed.

Step 502: The first communication device sends a notification message to the second communication device; the notification message is used to instruct the second communication device to start a backup service link, and receive the third communication device through the backup service link. At least one optical signal sent by the communication device.

As shown in Figure 6, when the current service link between the third communication device and the second communication device, that is, the optical fiber on the main service link, does not fail, the main service link remains open, and the standby The service link remains in an off state, and the second communication device receives the at least one optical signal through the active service link. When the optical fiber on the current service link between the third communication device and the second communication device, that is, the main service link, fails, the backup service link remains open, and the second communication device passes the backup service The link receives the at least one optical signal.

Here, informing the second communication device to enable the standby service link has the following advantages:

When the optical fiber on the current service link fails due to external force construction, the second communication device can transfer the affected service on the main service link The impact and loss of the services transmitted on the service links are minimized.

In practical applications, if the optical fiber on the current service link between the third communication device and the second communication device fails due to external force interference, the first communication device can infer that the second communication device has a In order to ensure the sensitivity of coherent detection of at least one optical signal received by the second communication device, the second communication device may be notified to adjust the SOP of the local oscillator.

Based on this, in an embodiment, it is determined that the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system fails; the method further includes:

determining a first angle; the first angle is used to adjust the SOP of the local oscillator optical signal generated by the second communication device;

generating first information; the first information includes the first angle;

sending the first information to the second communication device; the first information is used to instruct to adjust the SOP of the local oscillator optical signal generated by the second communication device, and use the adjusted local oscillator optical signal Demodulate the at least one optical signal.

In an example, as shown in FIG. 7 , the process of notifying the second communication device to adjust the SOP of the local oscillator is described, including:

Step 701: The first communication device obtains the first parameter sent by the second communication device; when the first parameter meets a preset condition, determine the current service link between the third communication device and the second communication device The fiber optics on have failed.

Step 702: the first communication device determines a first angle; generates first information; the first information includes the first angle; sends the first information to the second communication device;

Wherein, the first angle is used to adjust the SOP of the local oscillator optical signal generated by the second communication device; the first information is used to indicate the SOP of the local oscillator optical signal generated by the second communication device performing adjustment, and using the adjusted local oscillator optical signal to demodulate the at least one optical signal.

Here, notifying the second communication device to adjust the SOP of the local oscillator has the following advantages:

When the optical fiber on the current service link fails due to external force construction, the second communication device can adjust the SOP of the local oscillator optical signal generated by the second communication device, so as to ensure that at least one optical signal received subsequently The SOP of any one optical signal and the SOP of the local oscillator fall within the normal value range, when the second communication device performs coherent detection on receiving at least one optical signal, it can be successfully demodulated, and the demodulated optical signal, thereby improving the sensitivity of coherent detection.

By adopting the technical solution of the embodiment of the present invention, the first communication device can determine the third Whether the optical fiber on the current service link between the communication device and the second communication device is faulty, compared with the method of detecting the optical fiber fault in the related art, the fault detection of the optical fiber can be automatically realized, and the detection It is more timely and can ensure the normal transmission of services.

In order to implement the fault detection method of the embodiment of the present invention, the embodiment of the present invention also provides a fault detection device, which is set on the first communication device. FIG. 8 is a schematic diagram of the composition and structure of the fault detection device according to the embodiment of the present invention; as shown in FIG. As shown, the device includes:

The acquisition unit 81 is configured to acquire a first parameter; the first parameter represents the SOP of one optical signal in at least one optical signal received by the second communication device in the optical communication system and the local oscillator light generated by the second communication device The amount of variation between the SOPs of the signal;

The processing unit 82 is configured to judge whether the first parameter satisfies a preset condition, and obtain a judgment result; based on the judgment result, determine the current service between the third communication device and the second communication device in the optical communication system Whether the fiber on the link is faulty.

In an embodiment, the acquiring unit 81 is specifically configured to:

Acquiring a first parameter sent by the second communication device;

Wherein, the first parameter is sent by the second communication device to the first communication device after receiving the at least one optical signal from the third communication device.

In an embodiment, the processing unit 82 is specifically configured to:

Determining that the optical fiber on the current service link between the third communication device and the second communication device has failed; determining a first distance between the location of the second communication device and the location of the third communication device ; using the value corresponding to the first parameter and the first distance to determine the location of the fiber fault on the current service link between the third communication device and the second communication device.

In an embodiment, the processing unit 82 is specifically configured to:

calculating the difference between the value corresponding to the first parameter and the preset value to obtain the difference;

Quotienting the difference with the preset value to obtain a first ratio;

Based on the first ratio and the first distance, determine a fiber fault location on a current service link between the third communication device and the second communication device.

In an embodiment, the processing unit 82 is specifically configured to:

Acquiring the first duration for which the first parameter satisfies the preset condition;

judging whether the first duration is greater than or equal to a preset duration;

When it is determined that the first duration is greater than or equal to the preset duration, the determined optical fiber fault location is sent to the second communication device for the second communication device to issue a fault alarm.

In an embodiment, the processing unit 82 is specifically configured to:

Determining that the optical fiber on the current service link between the third communication device and the second communication device fails; sending a notification message to the second communication device; the notification message is used to indicate to the second communication device Turn on the standby service link, and receive at least one optical signal sent by the third communication device through the standby service link.

In an embodiment, the processing unit 82 is specifically configured to:

Determining that the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a fault; determining a first angle; the first angle is used to generate an error on the second communication device Adjust the SOP of the local oscillator optical signal;

generating first information; the first information includes the first angle;

sending the first information to the second communication device; the first information is used to instruct to adjust the SOP of the local oscillator optical signal generated by the second communication device, and use the adjusted local oscillator optical signal Demodulate the at least one optical signal.

In practical application, the acquisition unit 81 can be realized by a communication interface in the fault detection device; the processing unit 82 can be realized by a processor in the fault detection device combined with a communication interface.

It should be noted that: when the fault detection device provided in the above-mentioned embodiment performs fault detection, it only uses the division of the above-mentioned program modules as an example for illustration. In practical applications, the above-mentioned processing allocation can be completed by different program modules as required That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the fault detection device and the fault detection method embodiments provided in the above embodiments belong to the same idea, and the specific implementation process thereof is detailed in the method embodiments, and will not be repeated here.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention provides a fault detection system, as shown in FIG. 9, including:

The third communication device 91 is configured to generate the at least one optical signal, modulate the at least one optical signal in an external modulation manner, and send the modulated at least one optical signal to the second communication device.

The second communication device 92 is configured to receive the at least one optical signal; detect the SOP of any optical signal in the at least one optical signal, and calculate the SOP of any optical signal and the local oscillator optical signal generated by the second communication device and report the calculated variation to the first communication device.

The first communication device 93 is configured to determine whether the optical fiber on the current service link between the second communication device and the third communication device fails based on the variation.

It should be noted that: the specific processing procedures of the third communication device 91 , the second communication device 92 , and the first communication device 93 have been described in detail above, and will not be repeated here.

The embodiment of the present invention also provides a first communication device, as shown in FIG. 10 , including:

Communication interface 101, capable of information interaction with other devices;

The processor 102 is connected to the communication interface 101 and configured to execute the methods provided by one or more technical solutions on the smart device side when running the computer program. Instead, the computer program is stored on the memory 103 .

Specifically, the processor 102 is configured to execute the following programs when executing a computer program:

Acquire a first parameter; the first parameter represents the SOP of at least one optical signal received by the second communication device in the optical communication system and the SOP of the local oscillator optical signal generated by the second communication device Variation;

judging whether the first parameter satisfies a preset condition, and obtaining a judging result; based on the judging result, determining whether the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system is malfunction.

In one embodiment, the communication interface 101 is used to execute the following programs when executing computer programs:

Acquiring a first parameter sent by the second communication device;

Wherein, the first parameter is sent by the second communication device to the first communication device after receiving the at least one optical signal from the third communication device.

In one embodiment, the processor 102 is configured to execute the following programs when executing a computer program:

Determining that the optical fiber on the current service link between the third communication device and the second communication device has failed; determining a first distance between the location of the second communication device and the location of the third communication device ; using the value corresponding to the first parameter and the first distance to determine the location of the fiber fault on the current service link between the third communication device and the second communication device.

In one embodiment, the processor 102 is configured to execute the following programs when executing a computer program:

calculating the difference between the value corresponding to the first parameter and the preset value to obtain the difference;

Quotienting the difference with the preset value to obtain a first ratio;

Based on the first ratio and the first distance, determine a fiber fault location on a current service link between the third communication device and the second communication device.

In one embodiment, the processor 102 is configured to execute the following programs when executing a computer program:

Acquiring the first duration for which the first parameter satisfies the preset condition;

judging whether the first duration is greater than or equal to a preset duration;

When it is determined that the first duration is greater than or equal to the preset duration, the determined optical fiber fault location is sent to the second communication device for the second communication device to issue a fault alarm.

In one embodiment, the processor 102 is configured to execute the following programs when executing a computer program:

Determining that the optical fiber on the current service link between the third communication device and the second communication device fails; sending a notification message to the second communication device; the notification message is used to indicate to the second communication device Turn on the standby service link, and receive at least one optical signal sent by the third communication device through the standby service link.

In one embodiment, the processor 102 is configured to execute the following programs when executing a computer program:

Determining that the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a fault; determining a first angle; the first angle is used to generate an error on the second communication device Adjust the SOP of the local oscillator optical signal;

generating first information; the first information includes the first angle;

sending the first information to the second communication device; the first information is used to instruct to adjust the SOP of the local oscillator optical signal generated by the second communication device, and use the adjusted local oscillator optical signal Demodulate the at least one optical signal.

It should be noted that: the specific processing procedures of the processor 102 and the communication interface 101 are detailed in the method embodiments, and will not be repeated here.

Of course, in practical applications, various components in the first communication device 100 are coupled together through the bus system 104 . It can be understood that the bus system 104 is used to realize connection and communication between these components. In addition to the data bus, the bus system 104 also includes a power bus, a control bus and a status signal bus. However, the various buses are labeled as bus system 104 in FIG. 10 for clarity of illustration.

The memory 103 in the embodiment of the present application is used to store various types of data to support the operation of the network device 100 . Examples of such data include: any computer program for operating on the first communication device 100 .

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 102 or implemented by the processor 102 . The processor 102 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 102 or instructions in the form of software. The aforementioned processor 102 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The processor 102 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 103, and the processor 102 reads the information in the memory 103, and completes the steps of the aforementioned method in combination with its hardware.

In an exemplary embodiment, the first communication device 100 may be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), complex programmable logic device (CPLD, Complex Programmable LogicDevice), field programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or others Electronic components are implemented for performing the aforementioned method.

It can be understood that the memory (memory 103 ) in this embodiment of the present application may be a volatile memory or a nonvolatile memory, and may also include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory) Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-OnlyMemory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory, Optical Disk , or CD-ROM (Compact Disc Read-OnlyMemory); the magnetic surface storage can be disk storage or tape storage. The volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM, Static Random Access Memory), Synchronous Static Random Access Memory (SSRAM, Synchronous Static Random Access Memory), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Type Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Connection Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory). The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

In an exemplary embodiment, the embodiment of the present invention also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a memory 103 storing a computer program, and the above-mentioned computer program can be used by the first communication device 100 The processor 102 is executed to complete the steps described in the foregoing method on the terminal side. The computer-readable storage medium can be memories such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

It should be noted that: "first", "second", etc. are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence.

In addition, the technical solutions described in the embodiments of the present invention may be combined arbitrarily if there is no conflict.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (11)

1. A method of fault detection, for use with a first communication device, the method comprising:

acquiring a first parameter; the first parameter represents the variation between the polarization state SOP of one optical signal in at least one optical signal received by a second communication device in the optical communication system and the SOP of a local oscillator optical signal generated by the second communication device;

Judging whether the first parameter meets a preset condition or not to obtain a judging result;

based on the judging result, determining whether an optical fiber on a current service link between third communication equipment and the second communication equipment in the optical communication system has a fault or not;

judging whether the first parameter meets a preset condition or not to obtain a judging result; based on the judging result, determining whether the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a fault, including:

judging whether the value corresponding to the first parameter falls into a normal value range or not;

if the value corresponding to the first parameter is determined not to fall into the normal value range, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment in the optical communication system has faults.

2. The method of claim 1, wherein the obtaining the first parameter comprises:

acquiring a first parameter sent by the second communication equipment;

the first parameter is sent to the first communication device after the second communication device receives the at least one path of optical signal from the third communication device.

3. The method of claim 1, wherein determining that the optical fiber on the current traffic link between the third communication device and the second communication device is faulty; the method further comprises the steps of:

determining a first distance between the location of the second communication device and the location of the third communication device;

and determining the optical fiber fault position on the current service link between the third communication equipment and the second communication equipment by using the value corresponding to the first parameter and the first distance.

4. A method according to claim 3, wherein said determining the location of the fiber fault on the current traffic link between the third communication device and the second communication device using the value corresponding to the first parameter and the first distance comprises:

the value corresponding to the first parameter is differenced with a preset value to obtain a difference value;

obtaining a first ratio value by carrying out quotient calculation on the difference value and the preset value;

and determining the optical fiber fault position on the current service link between the third communication device and the second communication device based on the first ratio and the first distance.

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

Acquiring a first duration of which the first parameter meets a preset condition;

judging whether the first time length is greater than or equal to a preset time length;

and when the first time length is greater than or equal to the preset time length, sending the determined optical fiber fault position to the second communication equipment so as to carry out fault warning on the second communication equipment.

6. The method of claim 1, wherein determining that the optical fiber on the current traffic link between the third communication device and the second communication device is faulty; the method further comprises the steps of:

sending a notification message to the second communication device; the notification message is used for indicating the second communication device to open a standby service link and receiving at least one path of optical signal sent by the third communication device through the standby service link.

7. The method of claim 1, wherein determining that an optical fiber on a current traffic link between a third communication device and the second communication device in the optical communication system is faulty; the method further comprises the steps of:

determining a first angle; the first angle is used for adjusting SOP of the local oscillator optical signal generated by the second communication equipment;

Generating first information; the first information includes the first angle;

transmitting the first information to the second communication device; the first information is used for indicating to adjust the SOP of the local oscillator optical signal generated by the second communication device, and demodulating the at least one path of optical signal by using the adjusted local oscillator optical signal.

8. A fault detection device, comprising:

an acquisition unit configured to acquire a first parameter; the first parameter represents the variation between SOP of one optical signal in at least one optical signal received by a second communication device in the optical communication system and SOP of a local oscillator optical signal generated by the second communication device;

the processing unit is used for judging whether the first parameter meets a preset condition or not to obtain a judging result; based on the judging result, determining whether an optical fiber on a current service link between third communication equipment and the second communication equipment in the optical communication system has a fault or not;

judging whether the first parameter meets a preset condition or not to obtain a judging result; based on the judging result, determining whether the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a fault, including:

Judging whether the value corresponding to the first parameter falls into a normal value range or not;

if the value corresponding to the first parameter is determined not to fall into the normal value range, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment in the optical communication system has faults.

9. A first communication device, comprising:

the communication interface is used for acquiring a first parameter; the first parameter represents the variation between SOP of one optical signal in at least one optical signal received by a second communication device in the optical communication system and SOP of a local oscillator optical signal generated by the second communication device;

the processor is used for judging whether the first parameter meets a preset condition or not to obtain a judging result; based on the judging result, determining whether an optical fiber on a current service link between third communication equipment and the second communication equipment in the optical communication system has a fault or not;

judging whether the first parameter meets a preset condition or not to obtain a judging result; based on the judging result, determining whether the optical fiber on the current service link between the third communication device and the second communication device in the optical communication system has a fault, including:

Judging whether the value corresponding to the first parameter falls into a normal value range or not;

if the value corresponding to the first parameter is determined not to fall into the normal value range, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment in the optical communication system has faults.

10. A first communication device comprising a processor and a memory for storing a computer program capable of running on the processor,

wherein the processor is adapted to perform the steps of the method of any of claims 1 to 7 when the computer program is run.

11. A storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the method according to any of claims 1 to 7.

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