CN113783609B - Fault detection method, device, related equipment and storage medium - Google Patents
Fault detection method, device, related equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a fault detection method, a fault detection device, related equipment and a storage medium. Wherein the method comprises the following steps: the first communication equipment acquires 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; and determining whether 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 or not based on the judging result.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a fault detection method, a fault detection device, a related device, and a storage medium.
Background
In an optical communication system, in order to ensure that optical signals can be normally transmitted between an optical transmission device and an optical reception device, an optical cable may be laid between the optical transmission device and the optical reception device. In general, the optical fibers in the optical cable are failed due to the influence of external weather environment and construction work, and thus communication between the optical transmission device and the optical reception device is interrupted. At present, whether an optical fiber fails or not is detected in an artificial way, and service transmission between an optical transmitting device and an optical receiving device is affected due to untimely detection.
Disclosure of Invention
In view of this, the embodiments of the present invention desire to provide a fault detection method, a fault detection device, a related device, and a storage medium.
The technical scheme of the embodiment of the invention is realized as follows:
at least one embodiment of the present invention provides a fault detection method, the method including:
acquiring a first parameter; the first parameter characterizes the variation between the polarization state (SOP, state of Polarization) 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;
and determining whether 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 or not based on the judging result.
Furthermore, in accordance with at least one embodiment of the present invention, the acquiring the first parameter includes:
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.
Further, in accordance with at least one embodiment of the present invention, determining that an optical fiber on a current traffic link between the third communication device and the second communication device is malfunctioning; 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.
Furthermore, according to at least one embodiment of the present invention, the determining, using the value corresponding to the first parameter and the first distance, a location of an optical fiber fault on a current service link between the third communication device and the second communication device includes:
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.
Furthermore, in accordance with at least one embodiment of the present invention, 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.
Further, in accordance with at least one embodiment of the present invention, determining that an optical fiber on a current traffic link between the third communication device and the second communication device is malfunctioning; 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.
Further, in accordance with at least one embodiment of the present invention, 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.
At least one embodiment of the present invention provides a fault detection apparatus including:
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; and determining whether 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 or not based on the judging result.
At least one embodiment of the present invention provides 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; and determining whether 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 or not based on the judging result.
At least one embodiment of the invention provides a first communication device comprising a processor and a memory for storing a computer program capable of running on the processor,
the processor is configured to execute the steps of any one of the methods on the first communication device side when running the computer program.
At least one embodiment of the present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any of the methods described above.
The fault detection method, the fault detection device, the fault detection equipment and the storage medium provided by the embodiment of the invention are that a first communication equipment acquires 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; judging whether the first parameter meets a preset condition or not to obtain a judging result; and determining whether 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 or not based on the judging result. By adopting the technical scheme of the embodiment of the invention, the first communication equipment can determine whether the optical fiber on the current service link between the third communication equipment and the second communication equipment breaks down based on the change quantity between the SOP of one optical signal and the SOP of the local oscillation optical signal in at least one optical signal received by the second communication equipment, and compared with the mode of manually detecting the optical fiber faults in the related technology, the method can automatically realize the fault detection of the optical fiber, and the detection is more timely, so that the normal transmission of the service can be ensured.
Drawings
FIG. 1 is a schematic diagram of a fault detection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an optical communication system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an implementation flow of determining a location of an optical fiber fault on a current service link between a third communication device and a second communication device according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of an implementation of sending a fiber fault location to a second communication device according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of an implementation of notifying a second communication device to open a standby service link according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a second communication device opening a backup service link according to an embodiment of the present invention;
fig. 7 is a schematic implementation flow chart of informing the second communication device to adjust the SOP of the local oscillation light according to the embodiment of the present invention;
FIG. 8 is a schematic diagram of the constitution of a fault detection device according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of the constitution of a fault detection system according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a composition structure of a first communication device according to an embodiment of the present invention.
Detailed Description
Prior to introducing the technical solution of the embodiment of the present invention, a description will be given of related technology.
In the related art, an optical fiber is used as a physical layer medium of an optical transmission system, and is the basis of the whole optical communication system. With the development of optical network technology and the expansion of application, a large number of optical fibers have been laid in various environments. As network structures become increasingly complex, network dynamic reconfiguration becomes increasingly more dense, and management of on-line cable resources and dark fibers becomes increasingly important. Whether the fiber condition is normal is an important guarantee of network operation stability. At present, the optical cable/optical fiber is broken and dug due to the external weather environment such as flood, earthquake, debris flow and other bad weather, the construction of a foundation and artificial damage, and the communication is interrupted. In the accident of optical cable interruption, the proportion of the optical cable manually excavated due to engineering construction is more than 60 percent and is far more than that of interruption caused by natural disasters and the aging of the optical cable, so that the problem of optical cable interruption caused by engineering construction is effectively prevented, and the technology of the industrial interest is realized. In the related art, maintenance personnel use instrument operation to perform testing, perform fiber breakpoint positioning, send out maintenance personnel to perform optical cable rush repair, so that the optical cable interruption time is long, the service is influenced, and the service is interrupted seriously.
Based on this, in the embodiment of the present invention, a first parameter is acquired; 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; judging whether the first parameter meets a preset condition or not to obtain a judging result; and determining whether 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 or not based on the judging result.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The embodiment of the invention provides a fault detection method, as shown in fig. 1, comprising the following steps:
step 101: 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;
step 102: judging whether the first parameter meets a preset condition or not to obtain a judging result; and determining whether 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 or not based on the judging result.
Here, the second communication device may refer to a device in the optical communication system that is capable of receiving at least one optical signal sent by the third communication device. The third communication device may refer to a device in an optical communication system capable of transmitting at least one optical signal to the second communication device.
Here, in step 101, during actual application, the third communication device may be configured to generate the at least one optical signal, modulate the at least one optical signal by using an external modulation method, and send the modulated at least one optical signal 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, coherent detection can be performed by using the local oscillator optical signals generated by the self and at least one path of received optical signals to obtain at least one path of demodulated optical signals, meanwhile, the SOP of any path of optical signals in the at least one path of optical signals can be detected, the variation between the SOP of any path of optical signals and the SOP of the local oscillator optical signals generated by the second communication equipment is calculated, and the calculated variation is reported to the first communication equipment. The first communication device is configured to obtain the variable amount reported by the second communication device, and determine, based on the variable amount, whether an optical fiber on a current service link between the second communication device and the third communication device has a fault. The variation may be a difference between an SOP of one optical signal and an SOP of a local oscillator optical signal of at least one optical signal received by the second communication device. Since the detection of the SOP may be implemented by extracting a stock vector of the signal and calculating the degree of polarization (DOP, degree of Polarization) according to the extracted stock vector, the variation may also refer to a difference between the DOP of one optical signal and the DOP of the local oscillation optical signal in at least one optical signal received by the second communication device.
Here, in step 102, in actual application, the local oscillation light may refer to a beam of laser light generated by the second communication device, where the laser light is referred to as the local oscillation light when the laser light is used as a reference signal. If the optical fiber on the current service link between the second communication device and the third communication device does not have a fault, the variation between the SOP of any one optical signal in at least one optical signal received by the second communication device and the SOP of the local oscillation optical signal generated by the second communication device falls into a normal value range; if the optical fiber on the current service link fails, since the SOP of any one optical signal in the at least one optical signal received by the second communication device changes along with the optical fiber failure, and the SOP of the local oscillation optical signal does not change along with the optical fiber failure, the change amount between the SOP of any one optical signal in the at least one optical signal received by the second communication device and the SOP of the local oscillation optical signal exceeds the normal value range, so that whether the optical fiber on the current service link between the third communication device and the second communication device fails can be determined based on the change amount between the SOP of one optical signal in the at least one optical signal received by the second communication device and the SOP of the local oscillation optical signal.
In general, the SOP of a path of optical signal is closely related to the ellipticity of the fiber core, and if the ellipticity of the end face of the fiber core is not changed, the SOP of the path of optical signal is not changed; however, when the external environment affects the optical cable laid between the second communication device and the third communication device to different degrees, the optical fiber in the optical cable is extruded, so that the end face of the optical fiber is deformed, and finally the variation between the SOP of any one optical signal in at least one optical signal received by the second communication device and the SOP of the local oscillation optical signal exceeds the normal value range. The influence of the external environment includes: the ground construction is to the influence that buried optical cable laid between second communications facilities with the third communications facilities, vibration when the train is passed through is to the influence that optical cable laid along the railway between second communications facilities with the third communications facilities is caused, and the wave is patted the influence that submarine optical cable laid between second communications facilities with the third communications facilities is caused, the strong wind is to the influence that aerial optical cable laid between second communications facilities with the third communications facilities is caused.
In practical application, after the second communication device receives at least one path of optical signal sent by the third communication device, detecting the SOP of any path of optical signal in the at least one path of optical signal, calculating the variation between the SOP of the detected path of optical signal and the SOP of the local oscillation optical signal generated by the second communication device, and reporting the calculated variation to the first communication device so that the first communication device can judge whether the optical fiber on the current service link between the second communication device and the third communication device has a fault.
Based on this, in an embodiment, the acquiring the first parameter includes:
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.
The at least one optical signal may refer to at least one optical signal with different wavelengths.
After the first communication device obtains the first parameter sent by the second communication device, judging whether the value corresponding to the first parameter falls within a normal value range, if the value corresponding to the first parameter is determined not to fall within the normal value range, 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.
Taking the optical communication system shown in fig. 2 as an example, a process of acquiring a first parameter by a first communication device and a process of determining whether an optical fiber on a current service link between the third communication device and a second communication device is faulty based on the first parameter are described as follows:
as shown in fig. 2, the optical communication system includes: the system comprises an optical transceiver A, an optical transceiver B and a management platform; the optical transceiver A corresponds to the third communication device, the optical transceiver B corresponds to the second communication device, and the management platform corresponds to the first communication device; wherein,,
the optical transceiver a includes An optical transceiver unit A1, optical transceiver units A2, … …, an optical transceiver unit An, and a multiplexer (OM). The optical transceiver unit A1 and the optical transceiver units A2 and … … are used for generating N paths of optical signals with different wavelengths; the wave combiner (OM) is configured to modulate the N optical signals onto an optical carrier by using an external modulation manner, and transmit the modulated N optical signals to the optical transceiver B.
The optical transceiver B includes an optical transceiver unit B1, optical transceiver units B2, … …, an optical transceiver unit Bn, and a demultiplexer (OD). The optical splitter (OD) is used for separating the received N paths of optical signals according to wavelengths; one of the optical transceiver units B1, B2 and … … is used for calculating the difference between the SOP of the separated optical signal and the SOP of the local oscillator optical signal, and reporting the calculated difference to the management platform; and meanwhile, the method is also used for carrying out coherent coupling on the separated optical signals and the local oscillation optical signals, and carrying out coherent detection on the coupled signals. The coherent coupling may refer to mixing the separated optical signal and the local oscillation optical signal to obtain an intermediate frequency signal, and the coherent detection may refer to demodulating the optical signal by using the intermediate frequency signal obtained by the coherent coupling to obtain a demodulated optical signal.
The management platform is used for receiving the difference value reported by one of the optical transceiver unit B1, the optical transceiver units B2 and … … and the optical transceiver unit Bn of the optical transceiver equipment B and judging whether the difference value meets a preset condition or not; and when the difference value meets a preset condition, determining that the optical fiber on the current service link between the optical transceiver A and the optical receiver B has faults.
If the optical fiber on the current service link between the optical transceiver device a and the optical transceiver device B has no fault, the difference value between the SOP of any one optical signal in the at least one optical signal and the SOP of the local oscillator optical signal received by the optical transceiver device B is in a balanced state, that is, the difference value between the SOP of any one optical signal in the at least one optical signal and the SOP of the local oscillator optical signal is in a normal value range, for example, the SOP of the local oscillator optical signal is 10 °, the SOP of the local oscillator optical signal is 50 °, the difference value=50 ° -10 ° =40°, and the difference value is in the normal value range (0, 60 °). If the optical fiber on the service link 1 between the optical transceiver device a and the optical receiver device B is continuously and abnormally extruded and disturbed by the construction of the external force, the variation between the SO of any one optical signal in at least one optical signal and the SOP of the local oscillator light will change, that is, the difference between the SOP of any one optical signal in at least one optical signal and the SOP of the local oscillator light will exceed the normal value range, for example, the SOP of the local oscillator light signal is 10 °, the SOP of the local oscillator light signal is 80 °, the difference=80 ° -10 ° =70 °, and the difference exceeds the normal value range (0, 60 °).
In practical application, if an optical fiber on a current service link between a third communication device and a second communication device in the optical communication system fails due to external force interference such as construction, the change amount between the SOP of any one optical signal in at least one optical signal received by the second communication device and the SOP of a local oscillation optical signal generated by the second communication device exceeds a normal value range, and the change amount increases linearly with the increase of the transmission distance of the optical signal, so that the position where the optical fiber fails due to the external force interference can be calculated based on the distance between the position of the third communication device and the position of the second communication device and the first parameter.
Based on this, in an embodiment, determining that an optical fiber on a current service 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 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.
Specifically, the determining, by using the value corresponding to the first parameter and the first distance, the location of the optical fiber fault on the current service link between the third communication device and the second communication device includes:
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.
The preset value may be the maximum value of the normal value range in which the variation is located when the optical fiber fails.
In one example, as shown in fig. 3, a process for determining a location of a fiber fault on a current traffic link between a third communication device and a second communication device is described, comprising:
step 301: the method comprises the steps that first communication equipment obtains first parameters sent by second communication equipment; and when the first parameter meets a preset condition, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment is in fault.
Here, the first parameter characterizes a variation between an SOP of one optical signal of at least one optical signal received by the second communication device and an SOP of a local oscillator optical signal generated by the second communication device.
Here, the value corresponding to the first parameter may be calculated according to formula (1).
A1＝S1-S2 (1)
Wherein A1 represents a value corresponding to the first parameter; s1, SOP of one optical signal in at least one optical signal received by second communication equipment; s2 represents SOP of local oscillator optical signals generated by the second communication equipment.
Step 302: the first communication device determining a first distance between the second communication device and a third communication device; and determining the fault position of the optical fiber based on the value corresponding to the first parameter and the first distance.
Here, the optical fiber fault location may be calculated according to formula (2).
L2＝(A1-Z)/Z×L1 (2)
Wherein L2 is the distance between the optical fiber fault location and the location of the second communication device; a1 represents the amount of change; z represents the maximum value of the normal value range in which the variable quantity is located when the optical fiber fails, namely 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 may receive at least one optical signal sent by the third communication device and may also send at least one optical signal to the third communication device, the third communication device may detect a change amount between an SOP of any one optical signal in the received at least one optical signal and an SOP of a local oscillation optical signal generated by the third communication device, so the first communication device may obtain the change amount reported by the third communication device, and determine the optical fiber fault position based on the change amount and the first distance, where a specific implementation process is the same as a process of determining the optical fiber fault position according to a first parameter, and is not described herein again. Here, since the SOP of the optical signal linearly increases with an increase in the transmission distance after the optical fiber fails, when the optical fiber failure position is closer to the second communication device, the amount of change in the SOP detected by the second communication device is smaller than the amount of change in the SOP detected by the third communication device.
Here, the optical fiber fault location is located based on the first parameter, which has the following specific advantages:
and correlating the deformation of the end face of the optical fiber on the current service link between the second communication equipment and the third communication equipment caused by the intrusion of the external force with the change of the SOP of any one of at least one path of optical signals received by the second communication equipment caused by the deformation of the end face of the optical fiber, and judging whether the optical fiber is interrupted or not by detecting whether the change quantity between the SOP of any one path of optical signals received by the second communication equipment and the SOP of the local oscillation optical signals generated by the second communication equipment exceeds the normal value range or not, and positioning the fault position of the optical fiber when the interruption of the optical fiber is determined, so that the early warning of the interruption of the optical fiber can be performed in advance.
In practical application, 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 calculates the position of the optical fiber failure caused by the external force interference, and then, to avoid the optical fiber interruption, the position of the optical fiber failure can be sent to the second communication device for the second communication device to perform failure alarm.
Based on this, in an embodiment, 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.
Here, in practical application, it is considered that some external force is not continuous, for example, the duration of the invasion of the strong wind into the optical fiber may be short, so that after the strong wind stops invading the optical fiber, the service transmitted on the current service link may not be greatly affected; however, some external forces may continuously affect the optical fiber, for example, the duration of the optical fiber may be long during construction, so if the optical fiber is continuously affected by the construction, the service transmitted on the current service link may be greatly affected, so the first communication device may determine whether the first time length of the first parameter meeting the preset condition is greater than or equal to the preset duration, and when the first time length is determined to be greater than or equal to the preset duration, send the determined fault position of the optical fiber to the second communication device, so that the second communication device may perform fault alarm, thereby avoiding interruption of the optical fiber and ensuring normal transmission of the service.
In an example, as shown in fig. 4, a process of transmitting an optical fiber failure location to a second communication device is described, including:
step 401: the method comprises the steps that first communication equipment obtains first parameters sent by second communication equipment; and when the first parameter meets a preset condition, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment is in fault.
Step 402: the first communication device determining a first distance between the second communication device and a third communication device; and determining the fault position of the optical fiber based on the value corresponding to the first parameter and the first distance.
Step 403: the method comprises the steps that first communication equipment obtains a first duration of which a first parameter meets a preset condition; and when the first time length is determined to be greater than or equal to a preset time length, sending the determined optical fiber fault position to the second communication equipment.
Here, after the second communication device receives the optical fiber fault location, the optical fiber fault location may be displayed on a display interface, so that a maintainer contacts a related person in time to repair, or the affected optical cable is replaced by a spare optical cable.
Here, the optical fiber fault location is sent to the second communication device, which has the following specific advantages:
When the optical fiber on the current service link fails due to external force construction, the second communication equipment can generate early warning signals in advance and send out optical fiber failure position information so as to inform network operation and maintenance personnel to take corresponding emergency schemes, and the construction unit pauses construction, so that the optical fiber in the optical cable is prevented from being broken, and normal transmission of the service is ensured.
In practical application, if the optical fiber on the current service link between the third communication device and the second communication device fails due to external interference, the first communication device may inform the second communication device to start the standby service link to perform service transmission in order to avoid interruption of service transmission after calculating the position where the optical fiber fails due to external interference.
Based on this, in an embodiment, determining that an optical fiber on a 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.
Here, in actual application, the third communication device may send at least one optical signal to the second communication device through the active service link and the standby service link, and when the current service link between the third communication device and the second communication device, that is, the optical fiber on the active service link, is not faulty, the second communication device receives the at least one optical signal through the active service link, and the standby service link maintains the off state; when the optical fiber on the current service link, namely the main service link, between the third communication device and the second communication device fails, the second communication device receives the at least one path of optical signal through the standby service link, and the standby service link is kept in an open state.
In an example, as shown in fig. 5, a process of notifying the second communication device to open the backup service link is described, including:
step 501: the method comprises the steps that first communication equipment obtains first parameters sent by second communication equipment; and when the first parameter meets a preset condition, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment is in fault.
Step 502: the first communication device sends 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.
As shown in fig. 6, when the current service link between the third communication device and the second communication device, that is, the optical fiber on the active service link, fails, the active service link is kept in an on state, the standby service link is kept in an off state, and the second communication device receives the at least one optical signal through the active service link. When the current service link, namely the optical fiber on the main service link, between the third communication device and the second communication device fails, the standby service link is kept in an open state, and the second communication device receives the at least one path of optical signals through the standby service link.
Here, the second communication device is informed to open the standby service link, which 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 to the standby service link for transmission in advance by adopting a service switching mode, so that the loss of the affected service transmitted on the main service link is reduced to the minimum.
In practical application, if the optical fiber on the current service link between the third communication device and the second communication device fails due to interference of external force, the first communication device may calculate an angle of adjusting the SOP of the local oscillation light generated by the second communication device, so as to ensure sensitivity of the second communication device to coherent detection of at least one path of received optical signal, and may inform the second communication device to adjust the SOP of the local oscillation light.
Based on this, in an embodiment, determining that an optical fiber on a current service 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.
In an example, as shown in fig. 7, a process for notifying the second communication device of the adjustment of the SOP of the local oscillation light is described, including:
step 701: the method comprises the steps that first communication equipment obtains first parameters sent by second communication equipment; and when the first parameter meets a preset condition, determining that the optical fiber on the current service link between the third communication equipment and the second communication equipment is in fault.
Step 702: the first communication device determining a first angle; generating first information; the first information includes the first angle; transmitting the first information to the second communication device;
The first angle is used for adjusting SOP of the local oscillator optical signal generated by the second communication equipment; 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.
Here, the second communication device is notified to adjust the SOP of the local oscillation, which 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 oscillation optical signal generated by the second communication device, so that the variation of the SOP of any one path of optical signal and the SOP of the local oscillation optical in at least one path of optical signal received subsequently is ensured to fall into a normal value range, and when the second communication device carries out coherent detection on at least one path of optical signal received, the second communication device can successfully demodulate the optical signal received after demodulation, and the sensitivity of the coherent detection is improved.
By adopting the technical scheme of the embodiment of the invention, the first communication equipment can determine whether the optical fiber on the current service link between the third communication equipment and the second communication equipment breaks down based on the change quantity between the SOP of one optical signal and the SOP of the local oscillation optical signal in at least one optical signal received by the second communication equipment, and compared with the mode of manually detecting the optical fiber faults in the related technology, the method can automatically realize the fault detection of the optical fiber, and the detection is more timely, so that the normal transmission of the service can be ensured.
In order to implement the fault detection method according to the embodiment of the present invention, the embodiment of the present invention further provides a fault detection device, which is disposed on the first communication device, and fig. 8 is a schematic structural diagram of the fault detection device according to the embodiment of the present invention; as shown in fig. 8, the apparatus includes:
an acquisition unit 81 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;
a processing unit 82, configured to determine whether the first parameter meets a preset condition, to obtain a determination result; and determining whether 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 or not based on the judging result.
In an embodiment, the obtaining unit 81 is specifically configured to:
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.
In one embodiment, the processing unit 82 is specifically configured to:
Determining that an optical fiber on a current service link between the third communication device and the second communication device fails; 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.
In one embodiment, the processing unit 82 is specifically configured to:
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.
In one embodiment, the processing unit 82 is specifically configured to:
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.
In one embodiment, the processing unit 82 is specifically configured to:
determining that an optical fiber on a 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 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.
In one embodiment, the processing unit 82 is specifically configured to:
determining that an optical fiber on a current service link between third communication equipment and second communication equipment in the optical communication system has a fault; 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.
In practical application, the acquiring unit 81 may be implemented by a communication interface in the fault detection device; the processing unit 82 may be implemented by a processor in the fault detection device in combination with a communication interface.
It should be noted that: in the fault detection device provided in the above embodiment, only the division of each program module is used for illustration, and in practical application, the process allocation may be performed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processes described above. In addition, the fault detection device and the fault detection method provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the fault detection device and the fault detection method are detailed in the method embodiments and are not repeated herein.
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:
and the third communication device 91 is configured to generate the at least one optical signal, modulate the at least one optical signal by using an external modulation manner, and send the modulated at least one optical signal to the second communication device.
A second communication device 92 for receiving the at least one optical signal; detecting the SOP of any one optical signal in the at least one optical signal, calculating the variation between the SOP of any one optical signal and the SOP of the local oscillation optical signal generated by the second communication equipment, and reporting the calculated variation to the first communication equipment.
And the first communication device 93 is configured to determine, based on the variable amount, whether an optical fiber on a current service link between the second communication device and the third communication device is faulty.
It should be noted that: specific processing procedures of the third communication device 91, the second communication device 92, and the first communication device 93 are described in detail above, and will not be described again here.
The embodiment of the invention also provides a first communication device, as shown in fig. 10, including:
a communication interface 101 capable of information interaction with other devices;
and the processor 102 is connected with the communication interface 101 and is used for executing the method provided by one or more technical schemes on the intelligent equipment side when running the computer program. And the computer program is stored on the memory 103.
Specifically, the processor 102 is configured to execute the following program when executing the computer program:
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;
judging whether the first parameter meets a preset condition or not to obtain a judging result; and determining whether 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 or not based on the judging result.
In an embodiment, the communication interface 101 is configured to execute the following program when executing the computer program:
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.
In one embodiment, the processor 102 is configured to execute the following program when executing the computer program:
determining that an optical fiber on a current service link between the third communication device and the second communication device fails; 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.
In one embodiment, the processor 102 is configured to execute the following program when executing the computer program:
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.
In one embodiment, the processor 102 is configured to execute the following program when executing the computer program:
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.
In one embodiment, the processor 102 is configured to execute the following program when executing the computer program:
determining that an optical fiber on a 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 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.
In one embodiment, the processor 102 is configured to execute the following program when executing the computer program:
Determining that an optical fiber on a current service link between third communication equipment and second communication equipment in the optical communication system has a fault; 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.
It should be noted that: the specific processing procedures of the processor 102 and the communication interface 101 are detailed in the method embodiment, and are not described herein.
Of course, in actual practice, the various components in the first communication device 100 are coupled together by the bus system 104. It is understood that the bus system 104 is used to enable connected communications between these components. The bus system 104 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 104 in fig. 10.
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 method disclosed in the 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 capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 102 or by instructions in the form of software. The processor 102 described above may be a general purpose processor, a digital information transmitter (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 102 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The 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 embodied in a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 103, and the processor 102 reads information in the memory 103, in combination with its hardware, to perform the steps of the method as described above.
In an exemplary embodiment, the first communication device 100 can be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSPs, programmable logic devices (PLD, programmable Logic Device), complex programmable logic devices (CPLD, complex Programmable Logic Device), field-programmable gate arrays (FPGA, field-Programmable Gate Array), general purpose processors, controllers, microcontrollers (MCU, micro Controller Unit), microprocessors (Microprocessor), or other electronic components for performing the aforementioned methods.
It is to be understood that the memory (memory 103) of the embodiments of the present application may be either volatile memory or nonvolatile memory, and may include both volatile and nonvolatile memory. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, 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 (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
In an exemplary embodiment, the present invention also provides a storage medium, i.e. a computer storage medium, in particular a computer readable storage medium, for example comprising a memory 103 storing a computer program executable by the processor 102 of the first communication device 100 for performing the steps of the aforementioned terminal side method. The computer readable storage medium may be 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 to describe a particular order or sequence.
In addition, the embodiments of the present invention may be arbitrarily combined without any collision.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the 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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| US9509399B2 (en) * | 2015-02-13 | 2016-11-29 | Schweitzer Engineering Laboratories, Inc. | Transmission line protection using traveling waves in optical ground wire fiber |
| US9774392B2 (en) * | 2015-07-17 | 2017-09-26 | Ciena Corporation | Systems and methods using a polarimeter to localize state of polarization transients on optical fibers |
| GB201813698D0 (en) * | 2018-08-22 | 2018-10-03 | Univ Aston | Systems and methods for measuring a distance to a target and the complex reflectance ratio of a target |
| CN110868258B (en) * | 2018-08-27 | 2022-08-16 | 中兴通讯股份有限公司 | Device, system and method for realizing coherent detection |
| CN110018399B (en) * | 2019-05-15 | 2020-11-24 | 武汉康普常青软件技术股份有限公司 | Lightning stroke fault positioning method based on optical signal polarization state in optical fiber composite overhead ground wire (OPGW) of power transmission line |
| CN110380907B (en) * | 2019-07-26 | 2021-09-24 | 京信网络系统股份有限公司 | Network fault diagnosis method and device, network equipment and storage medium |
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