WO2022100384A1

WO2022100384A1 - Fault locating method, apparatus, and system

Info

Publication number: WO2022100384A1
Application number: PCT/CN2021/124777
Authority: WO
Inventors: 艾凡; 齐斌; 陈飞
Original assignee: 华为技术有限公司
Priority date: 2020-11-10
Filing date: 2021-10-19
Publication date: 2022-05-19
Also published as: CN114465661A

Abstract

The present application relates to the field of optical communication. Disclosed are a fault locating method, apparatus, and system. The method comprises: obtaining a location in a monitoring link of a fault point on an optical network device; and on the basis of the location in the monitoring link of the fault point, and a correspondence between locations and device identifiers, determining a device identifier of the fault point, wherein the optical network device comprises a backplate and at least two single boards, the correspondence between locations and device identifiers is established on the basis of at least two reference links determined by changing connection relationships between the at least two single boards and the backplate in the optical network device, and the at least two reference links comprise at least a portion of the monitoring link. The present application is used for performing fault point locating on an inspection link on an optical network device.

Description

Fault location method, device and system

This application claims the priority of the Chinese patent application with the application number 202011248579.5 and the application title "Fault Locating Method, Device and System", which was submitted to the State Intellectual Property Office of China on November 10, 2020, the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the field of optical communication, and in particular, to a fault location method, device and system.

Background technique

An optical cross-connect (OXC) device is a device used in an optical network, which includes a single board and a backplane fiber connection device (referred to as a backplane). There are multiple optical fiber connectors (also called optical connectors or optical fiber reflection heads) on the backplane, which are used for detachable connection with the single board.

With the use of the OXC equipment, optical components on the OXC equipment, such as optical fiber connectors or single boards, may fail. The current OXC device is also provided with a monitor (monitor, MON) board, which is used to monitor whether the OXC device has a link failure. When performing fault monitoring, the monitoring board forms a loop with the backplane and at least one single board connected to the backplane. The monitoring board sends an optical signal to the circuit, receives the optical signal passing through the circuit, determines the insertion loss of the circuit through the transmitted optical signal and the received optical signal, and determines whether there is a link failure in the circuit based on the insertion loss.

However, the current fault monitoring method can only determine whether there is a link fault on the OXC device, but cannot determine which optical device is the fault point, resulting in failure to locate the fault.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a fault location method, device, and system. The technical solution is as follows:

In a first aspect, a method for locating faults is provided. The method for locating faults can be executed by a fault locating device, and the method includes:

Obtain the position of the fault point on the optical network device in the monitoring link; based on the position of the fault point in the monitoring link and the corresponding relationship between the position and the device identification, determine the device identification of the fault point; wherein, the position The corresponding relationship with the device identifiers is the corresponding relationship between the positions of the multiple optical devices in the optical network device and the device identifiers of the multiple optical devices. The optical network device includes a backplane and at least two single boards, and the corresponding relationship between the position and the device identification is based on at least two determined based on changing the connection relationship between the at least two single boards in the optical network device and the backplane Established with reference links, the at least two reference links include at least part of the monitoring link.

The fault location method provided by the embodiment of the present application can be based on the corresponding relationship between the positions of the at least two reference links established and the device identifiers determined by changing the connection relationship between at least two single boards and the backplane in the optical network device. After the fault point occurs in the monitoring link, the device identifier of the fault point is determined based on the position of the fault point in the monitoring link and the corresponding relationship between the position and the device identifier. In this way, it is possible to determine which optical device the fault point is based on the device identification of the fault point, so as to realize effective fault location.

In an optional implementation manner, the method further includes: changing the connection relationship between the at least two single boards and the backplane in the optical network device to determine the at least two reference links; based on the at least two reference links link to establish the corresponding relationship.

The optical network device includes a plurality of optical fiber connectors for connecting the backplane and the single board, and the monitoring link includes the m-1 pair of optical fiber connectors, and m single fiber connectors connected by the m-1 pair of optical fiber connectors. board, each pair of optical fiber joints in the m-1 pairs of optical fiber joints includes a first optical fiber joint and a second optical fiber joint, the first optical fiber joint is adjacent to the second optical fiber joint in the monitoring link, and m is an integer greater than 1 . In an optional implementation manner, the fault locating device may first determine the position of the optical fiber connector in the monitoring link based on the determined at least two reference links, and then determine the position of the single board in the monitoring link, so as to obtain the monitoring chain The position of each optical device on the road, and then establish the corresponding relationship. Exemplarily, the foregoing process of establishing the corresponding relationship based on the at least two reference links includes:

Based on the at least two reference links, determine the position of the m-1 pair of optical fiber connectors in the monitoring link; determine the position of the m single boards in the monitoring link based on the position of the m-1 pair of optical fiber connectors ; Obtain the device identification of the m-1 pair of optical fiber connectors and the device identification of the m single boards; Based on the position of the m-1 pair of optical fiber connectors, the position of the m single boards, and the m-1 pair of optical fiber connectors The corresponding relationship is established between the identifier and the device identifiers of the m boards.

Exemplarily, the aforementioned at least two reference links are divided into: m-1 reference link groups, each reference link group includes multiple reference links, and each reference link group is used to obtain a pair of optical fiber connectors , wherein, in the i-th reference link group: each reference link includes at least i+1 single boards connected to the backplane, and each reference link includes the location where the first i single boards of the monitoring link are located. Part of the link, and the i+1 th board included in the multiple reference links is different, 1≤i≤m-1.

In the embodiment of the present application, the second optical fiber connector is positioned according to the different position distribution characteristics of the second optical fiber connector in the i-th pair of optical fiber connectors of the i-th reference link group from other optical components. According to this principle, based on at least two reference links, the process of determining the positions of m-1 pairs of optical fiber connectors in the monitoring link may include: acquiring m-1 relationships corresponding to the m-1 reference link groups one-to-one Curve group, where each reference link corresponds to a relationship curve. If the difference between the maximum value and the minimum value in the position distribution range of the t-th reflection peak of the multiple relationship curves in the i-th relationship curve group is greater than the preset difference, the corresponding position of the t-th reflection peak in the monitoring link is determined. is the position of a second optical fiber joint, t>1; the position corresponding to the t-1th reflection peak in the monitoring link is determined as the position of a first optical fiber joint. In the embodiment of the present application, the relationship curve of any link is used to reflect the relationship between the light intensity of the monitoring optical signal reflected by the point on the any link and the position of the point on the any link.

Since the fault locating device determines the i-th pair of optical connectors based on the link where the first i+1 boards in the i-th reference link group are located, the links after the i+1-th board do not affect the ith pair of optical connectors. For the determination of the optical connector, the reflection peaks of each relationship curve in the i-th relationship curve group include at least the reflection peak corresponding to the link where the first i+1 single boards are located. Therefore, when the fault locating device compares multiple relationship curves in the ith relationship curve group, the minimum value w in the number of reflection peaks of each relationship curve in the ith relationship curve group can be used as the traversal cut-off condition, according to The arrangement order of the reflection peaks in the relationship curve traverses the first w reflection peaks of each relationship curve to determine the reflection peaks with different position distribution characteristics, without traversing all the reflection peaks in each relationship curve, reducing the complexity of comparison. Thus, 2<t<w.

In an optional implementation manner, the fault location apparatus defaults that there is a fault point on the monitoring link in the optical network device, and directly executes the process of obtaining the location of the fault point on the monitoring link.

In another optional implementation manner, after determining that the monitoring link has a link failure, the fault locating apparatus performs a process of acquiring the location of the fault point on the optical network device in the monitoring link. In this way, when the monitoring link is normal, the process of obtaining the location of the fault point in the monitoring link can be avoided, redundant operations are reduced, and the locating efficiency of the fault point can be improved.

There are various implementation manners for determining whether the monitoring link has a link failure. The embodiments of the present application take the following optional implementation manners as examples for description:

In a first optional implementation manner, the fault locating apparatus determines whether there is a link failure in the monitoring link by detecting the optical power loss of the service optical signal in at least a part of the links of the monitoring link. The process includes: acquiring the optical power loss of at least part of the monitoring links through which the service optical signal passes; after determining that the optical power loss is greater than an optical power loss threshold, determining that the monitoring link has a link failure.

Optionally, the optical power loss is the difference between the optical powers detected at the output end of the first single board and the output end of the last single board that the service optical signal passes through in the monitoring link. In this way, the monitoring of the optical power loss of the complete path of the link through which the optical signal of the service passes in the monitoring link can be realized.

In actual implementation, the optical power loss may also be the difference between the optical powers detected at the output ends of any two single boards that the service optical signal passes through in the monitoring link.

In a second optional implementation manner, the fault locating apparatus determines whether the monitoring link has a link failure by establishing a loop through at least a part of the links of the monitoring link in the optical network structure. The process includes:

The fault locating device sends an optical signal to the circuit, receives the optical signal passing through the circuit, determines the insertion loss of the circuit through the transmitted optical signal and the received optical signal, and determines whether there is a link failure in the circuit based on the insertion loss.

In the embodiment of the present application, the process of obtaining the location of the fault point on the optical network device in the monitoring link includes:

Obtain the light intensity of the reflection peak generated by the monitoring link's reflection of the monitoring optical signal; according to the order of the transmission direction, the light intensity of the reflection peak corresponding to the monitoring link and the preset target light intensity are sequentially performed. comparison to determine the location of the point of failure in the monitoring link.

Optionally, the method further includes: after installing each single board included in the monitoring link on the optical network device, acquiring the target light intensity of each reflection peak generated by the monitoring link reflecting the monitoring optical signal; Stores the acquired target light intensity.

In a second aspect, the present application provides a fault locating device. The fault locating device may include at least one module, and the at least one module may be used to implement the first aspect or various possible implementations of the fault locating method provided by the first aspect. .

In a third aspect, a fault location device is provided, the device comprising:

processor and memory;

The memory stores computer instructions; the processor executes the computer instructions stored in the memory, so that the fault locating apparatus executes the first aspect or the fault locating method provided by various possible implementations of the first aspect.

In a fourth aspect, a computer-readable storage medium is provided, where computer instructions are stored in the computer-readable storage medium, and the computer instructions instruct a computer device to execute the fault location provided by the first aspect or various possible implementations of the first aspect. method.

In a fifth aspect, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, when the chip is running, it is used to execute the first aspect or the fault location method provided by various possible implementations of the first aspect.

In a sixth aspect, a fault location system is provided, including: an optical network device and the fault location apparatus according to any one of the second aspect or the third aspect.

In a seventh aspect, the present application provides a computer program product comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device may read the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the first aspect or the fault location method provided by various possible implementations of the first aspect.

To sum up, the fault location method provided by the embodiments of the present application can be based on the location of the establishment of the at least two reference links determined by changing the connection relationship between the at least two single boards and the backplane in the optical network device and the identification of the device. The corresponding relationship is established, and after the failure point occurs in the monitoring link, the device identification of the failure point is determined based on the position of the failure point in the monitoring link and the corresponding relationship between the position and the device identification. In this way, it is possible to determine which optical device the fault point is based on the device identification of the fault point, so as to realize effective fault location.

In the embodiment of the present application, the fault locating device can directly report the faulty optical device without manual secondary inspection, which reduces the fault maintenance time of the monitoring link in the optical network equipment and saves labor costs. Moreover, the embodiments of the present application are implemented based on the hardware structure of the existing optical network equipment, and there is no need to perform additional calibration on the optical fibers of the backplane, and the solution is highly robust. The fault location method is easy to implement, and can realize automatic fault location of the monitoring link without manual intervention.

Description of drawings

FIG. 1 is a schematic structural diagram of an optical network device provided by an embodiment of the present application;

Fig. 2 is the AA cross-sectional structural schematic diagram of the optical network equipment shown in Fig. 1;

3 is a schematic flowchart of a fault location method provided by an embodiment of the present application;

4 is a schematic diagram of a monitoring link provided by an embodiment of the present application;

5 is a schematic structural diagram of an i-th reference link group provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of the first group of reference links corresponding to the monitoring link shown in FIG. 4 provided by an embodiment of the present application;

7 is a schematic diagram of a second group of reference links corresponding to the monitoring link shown in FIG. 4 provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of an application environment of a fault location device provided by an exemplary embodiment of the present application;

9 is a schematic diagram of a relationship curve corresponding to a reference link provided by an embodiment of the present application;

10 is a schematic diagram of superposition of relationship curves in the second relationship curve group provided by an embodiment of the present application;

11 is a schematic diagram of a relationship curve corresponding to the monitoring link shown in FIG. 4 provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of an application environment of a fault location device provided by an embodiment of the present application;

13 is a block diagram of a fault location device provided by an embodiment of the present application;

14 is a block diagram of another fault location device provided by an embodiment of the present application;

15 is a block diagram of a setup module provided by an embodiment of the present application;

16 is a block diagram of another fault location device provided by an embodiment of the present application;

FIG. 17 is a block diagram of another fault location device provided by an embodiment of the present application;

FIG. 18 is a possible basic hardware architecture of the fault location apparatus provided by the embodiment of the present application.

Detailed ways

In order to make the principles and technical solutions of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of an optical network device provided by an embodiment of the present application, and FIG. 2 is a schematic structural diagram of an AA cross-section of the optical network device shown in FIG. 1 . As shown in FIG. 1 and FIG. 2 , the optical network device 10 includes a backplane 101 , at least two single boards 102 and a plurality of optical fiber connectors 103 . The backplane 101 is provided with a plurality of optical fibers. The single board 102 may be a monitoring board or a wavelength selective switch (Wavelength Selective Switching, WSS) service board. The monitoring board may include an optical switch, and the monitoring board can be connected to any other single board on the backplane through the optical switch and the backplane; the WSS service board has the ability to control the deflection of the transmission direction of the optical signal, and the WSS service board passes through the backplane. The board can be connected to any other board on the backplane. The optical fiber connector 103 is used for detachably connecting the backplane 101 and the single board 102 . For example, the detachable connection is a pluggable connection. The fiber optic connectors in the optical network device 10 may be located on the backplane 101 and/or the single board 102 . When the embodiments of the present application are actually implemented, an optical fiber connector located between a single board and a backplane may be regarded as an optical fiber connector. For example, the single board 102 has an optical fiber connector x1, and the backplane 101 has an optical fiber connector x2. If the connection between the single board 102 and the backplane 101 is realized by plugging the optical fiber connector x1 and the optical fiber connector x2, the plugged optical fiber connector x1 can be connected to the backplane 101. Fiber connector x2 is regarded as the same fiber connector. For the convenience of description, the following embodiments are described by taking an example that the optical fiber connector is located on the backplane.

The optical network device 10 shown in FIG. 1 and FIG. 2 may be an OXC device. Optionally, the OXC device may further include an OXC sub-rack 104, and the OXC sub-rack 104 is used to support the backplane 101 and the at least two single boards 102, so as to ensure the stability of the connection between the backplane 101 and the at least two single boards 102 . In an optional implementation manner, the OXC subrack 104 is detachably connected to the backplane 101 ; in another implementation manner, the OXC subrack 104 is fixedly connected to the backplane 101 .

With the use of the optical network device 10, the optical components on the optical network device 10, such as the optical fiber connector 103 or the single board 102, may fail. For example, due to long-term use or other reasons, the optical fiber connector is dirty or bent, resulting in the failure of a certain optical fiber connector 103, which may increase the insertion loss of the entire backplane, resulting in the deterioration of the quality of the optical signal transmitted in the optical network equipment. . For another example, because a certain optical structure included in a single board 102 is loose or the optical path is bent, the single board 102 is faulty, and the quality of the optical signal transmitted in the single board 102 may be deteriorated. For example, the optical structure can be an optical switch in a monitoring board, or the optical structure can be a liquid crystal on silicon (Liquid Crystal on Silicon, LCOS), a microlens, a cylindrical mirror, or a prism in the WSS service board.

However, in the related art, since the optical fiber connection manner in the backplane is complicated, different single boards can be connected with different optical fiber connectors on the backplane to form different links in the optical network device. As a result, even if it is determined that there is a fault point in the optical network equipment, it is impossible to locate which optical device the fault point actually is in the link.

The fault location method provided by the embodiment of the present application can determine the device identifier of the fault point, so that the staff can quickly and effectively find the faulty optical device. FIG. 3 is a schematic flowchart of a fault locating method provided by an embodiment of the present application. The fault locating method may be executed by a fault locating device. As shown in FIG. 3 , the embodiment of the present application takes the fault location process on one monitoring link in the optical network device shown in FIG. 1 and FIG. 2 as an example, and the fault location process of other monitoring links refers to the monitoring link. . The monitoring link is a link (also called an optical path, optical path or path) that needs to be monitored for faults in the optical network equipment. The monitoring link may be a link pre-designated by a user or a service transmission link in an optical network device. The fault location method includes:

S301. Establish a corresponding relationship between the position and the device identifier.

The corresponding relationship between the positions and the device identifiers is the corresponding relationship between the positions of the multiple optical devices in the monitoring link and the device identifiers of the multiple optical devices. As mentioned above, the optical network device includes a backplane and at least two single boards. In this embodiment of the present application, the corresponding relationship between the position and the device identifier is based on changing the connection relationship between at least two boards and the backplane in the optical network device (the changing of the connection relationship between the at least two boards and the backplane in the optical network device) The process of the connection relationship is to establish at least two reference links determined by the path switching process in the optical network device). The reference link is a link determined in the optical network device based on the monitoring link, which is used to establish the correspondence between the position and the device identifier. The at least two reference links include at least part of the monitoring link. Optionally, each of the at least two reference links includes at least part of the monitoring link. Wherein, one reference link in the at least two reference links may include all links of the monitoring link.

Exemplarily, the process of establishing the correspondence between the position and the device identifier includes:

A1. Change the connection relationship between at least two single boards and the backplane in the optical network device to determine at least two reference links.

A2. Based on at least two reference links, establish the correspondence between the position and the device identification.

The optical network equipment includes a plurality of optical fiber connectors for connecting the backplane to the single board. The monitoring link is an optical signal transmission link formed by connecting a single board to a backplane through an optical fiber connector in an optical network device. The monitoring link includes m-1 pairs of optical fiber connectors, and m single boards connected by m-1 pairs of optical fiber connectors, m is an integer greater than 1, and each pair of optical fiber connectors in the m-1 pairs of optical fiber connectors includes a first optical fiber The connector and the second optical fiber connector, the first optical fiber connector and the second optical fiber connector are respectively used to connect two adjacent single boards in the monitoring link, therefore, the first optical fiber connector in the monitoring link is adjacent to the second optical fiber connector. Wherein, when the optical signal is transmitted in the monitoring link, for each pair of optical fiber joints, the optical signal first passes through the first optical fiber joint, and then passes through the second optical fiber joint through the backplane. FIG. 4 is a schematic diagram of a monitoring link provided by an embodiment of the present application. Assuming that m=3 in FIG. 4 , the monitoring link includes 2 pairs of optical fiber connectors and 3 single boards. The monitoring link shown in Figure 4 is a link obtained according to the backplane fiber connection relationship of the optical network equipment. In order to facilitate the reader's understanding, the backplane with a physical structure as a whole is split into two logical backplanes in Figure 4. draw. In this monitoring link, the optical signal is transmitted along the transmission direction of the optical signal, and passes through the board 1, the first pair of optical fiber connectors on the backplane (ie, fiber connector 1 and fiber connector 2), the board 2, and the first pair of fiber connectors on the backplane. Two pairs of optical fiber connectors (ie, optical fiber connector 3 and optical fiber connector 4 ) and single board 3 .

In the embodiment of the present application, the fault locating apparatus first determines at least two reference links by performing the foregoing steps A1 and A2, and then establishes a correspondence between positions and device identifiers under the guidance of the at least two reference links. In an optional implementation manner, the fault locating device may first determine the position of the optical fiber connector in the monitoring link based on the determined at least two reference links, and then determine the position of the single board in the monitoring link, so as to obtain the monitoring chain The position of each optical device on the road is established, and the corresponding relationship between the position and the device identification is established.

Exemplarily, the fault locating apparatus may be divided into m-1 reference link groups by performing at least two reference links determined in the foregoing step A1, and the m-1 reference link groups and m-1 pairs of optical fiber connectors one by one. Correspondingly, each reference link group is used to determine a corresponding pair of optical fiber connectors. Each reference link group includes multiple reference links, and the number of reference links in each reference link group may be preset, for example, the number may range from 2 to 20. FIG. 5 is a schematic structural diagram of an ith reference link group provided by an embodiment of the present application. FIG. 5 assumes that the ith reference link group includes n reference links, and n≧2. As shown in Figure 5, the ith reference link group is used to determine the ith pair of optical fiber connectors. In the i-th reference link group: each reference link includes at least i+1 boards connected to the backplane, and each reference link includes the partial link where the first i boards of the monitoring link are located, In addition, the i+1 th boards included in the multiple reference links in the ith reference link group are different, and 1≤i≤m-1. In this way, the arrangement order of each optical device before the i+1 th single board in the ith reference link group is the same, and the arrangement order is the same as that of each optical device before the i+1 th single board in the monitoring link. The sorting order is the same. As shown in Figure 5, the optical components before the i+1th board of reference links 1 to n are arranged in the same order, including board 1, the first pair of optical connectors, board 2, and the second pair of optical Connectors... Board i, and the i-th pair of optical fiber connectors; the i+1-th boards of the reference links 1 to n are different, namely, board o, board p, and board q, etc. It should be noted that, if the multiple reference links also include the boards located behind the i+1th board, the boards behind the i+1th board of the multiple reference links may be the same or different. It does not affect the determination of the i-th pair of optical fiber connectors.

FIG. 6 and FIG. 7 are schematic diagrams of the first group of reference links and the second group of reference links corresponding to the monitoring link shown in FIG. 4 , respectively, according to an embodiment of the present application. As shown in Figure 6, the first reference link group includes 4 reference links, namely the link including board 1 and board 2, the link including board 1 and board 3, and the link including board 1 The link with board 4, and the link including board 1 and board 5. In the first reference link group: each reference link includes at least two boards connected to the backplane, each reference link includes the part of the link where the first board of the monitoring link is located, and more The second board included in the reference link is different.

As shown in Figure 7, the second reference link group includes three reference links, which are the links including board 1, board 2, and board 3, and the links including board 1, board 2, and board 4. , and the link including Board 1, Board 2, and Board 5. In the second reference link group: each reference link includes at least three boards connected to the backplane, each reference link includes the part of the link where the first two boards of the monitoring link are located, and more The third board included in the reference link is different.

Correspondingly, the aforementioned step A2 may include: first determining the positions of multiple pairs of optical fiber connectors based on at least two reference links, then determining the positions of multiple single boards based on the positions of the multiple pairs of optical fiber connectors, and then establishing the corresponding relationship between the positions and the device identifiers. . By way of example, the process includes the following steps:

A21. Based on the at least two reference links, determine the position of the m-1 pair of optical fiber connectors in the monitoring link.

As previously mentioned, in any link in the optical network equipment, for each pair of fiber optic splices, the first fiber optic splicer precedes the second fiber optic splicer. Then, when the optical signal passes through the first optical fiber joint, it is affected by the link before the first optical fiber joint and the first optical fiber joint; when the optical signal passes through the second optical fiber joint, it is affected by the link before the second optical fiber joint and the first optical fiber joint. The effect of the second fiber optic connector. And the link before the second optical fiber connector adds the optical fiber in the backplane between the first optical fiber connector and the second optical fiber connector to the link before the first optical fiber connector, then the second optical fiber connector and the first optical fiber connector The distance is affected by the length of the fiber in the backplane. Taking the i-th reference link group as an example, the link before the i+1-th board in the monitoring link can be kept unchanged, and the link switching is performed inside the i-th board in the monitoring link, so that the The i veneer establishes connections with different i+1 th veneers through the backplane to obtain the i th reference link group. In the i-th pair of optical fiber connectors of the multiple reference links included in the reference link group, the physical positions of the first optical fiber connectors are fixed, and the physical positions of the second optical fiber connectors are different. Although there is a link switch inside the i-th board connected to the first optical fiber connector, because the optical path inside the board is short, the link length change caused by link switching is small. Therefore, the i-th reference link The positions of the optical devices in the links preceding the first fiber splices of the plurality of reference links of the group are the same or approximately the same. However, the difference in the length of the optical fibers in the backplane between the second optical fiber connectors of the multiple reference links and the first optical fiber connectors is relatively large, so that the positions of the second optical fiber connectors in the multiple reference links will be relatively large. The change is usually much larger than the position change caused by the change of the internal optical path of a single board. Therefore, in the i-th pair of optical fiber connectors in the i-th reference link group, the position distribution range of the second optical fiber connector is relatively large, and the difference between the maximum value and the minimum value in the position distribution range can reach centimeter level or even meter level . The position distribution characteristics of the second optical fiber connector and other optical components (such as single boards and other optical fiber connectors) in the reference link are quite different.

Taking FIG. 6 as an example, among the four reference links included in the first reference link group, the positions of the optical devices in the links before the first optical fiber connector are the same or approximately the same. However, the lengths of the optical fibers in the backplane between the second optical fiber connectors connecting the boards 2 to 5 respectively and the first fiber connectors are not the same, so the positions of the second fiber connectors in the four reference links will produce larger changes.

In the embodiment of the present application, the second optical fiber connector is positioned according to the different position distribution characteristics of the second optical fiber connector in the i-th pair of optical fiber connectors of the i-th reference link group from other optical components. According to this principle, based on at least two reference links, the process of determining the positions of m-1 pairs of optical fiber connectors in the monitoring link may include:

A211. Obtain m-1 relationship curve groups corresponding to m-1 reference link groups one-to-one.

Among them, each reference link corresponds to a relationship curve, and each relationship curve is used to reflect the light intensity after the monitoring optical signal is reflected by a point on the corresponding reference link (such as an optical fiber connector or an optical structure in a single board) and the corresponding The relationship of the position of the point on the reference link. Each relationship curve group includes multiple relationship curves.

FIG. 8 is a schematic diagram of an application environment of a fault location apparatus 40 provided by an exemplary embodiment of the present application. The fault location device 40 includes a reflected light detection module 401 and a processing module 402. The reflected light detection module 401 is used for sending (also called injecting) monitoring light to a link (such as a reference link or a monitoring link) in an optical network device The monitoring optical signal reflected by the link in the optical network equipment is received, and the optical intensity of the received optical signal is determined. In an optional implementation manner, the reflected light detection module 401 may generate a relationship curve according to the received light intensity of the monitoring optical signal and the determined position of the reflection point corresponding to the light intensity in the link, and will The relationship curve is output to the processing module 402, and the processing module 402 determines the position of the m-1 pair of optical fiber connectors based on the obtained relationship curve. In another optional implementation manner, the reflected light detection module 401 may receive the light intensity of the monitoring optical signal and determine the position of the reflection point corresponding to the light intensity in the link, and measure the received light intensity of the monitoring optical signal and The determined position is output to the processing module 402, and the processing module 402 generates a relationship curve, and determines the position of the m-1 pair of optical fiber connectors based on the generated relationship curve. The process of obtaining the light intensity of the monitoring optical signal and the position of the reflection point corresponding to the light intensity in the link by the aforementioned reflected light detection module 401 may refer to the optical frequency domain reflectometer (optical frequency domain reflectometer, OFDR) technology or the optical time domain reflectometer (optical time-domain reflectometer, OTDR) technology. The reflected light detection module 401 can achieve a spatial resolution of 10 cm (centimeter) and below, thus ensuring effective identification of each reflection peak.

It should be noted that the wavelengths of the aforementioned monitoring optical signal and the service optical signal (also called signal light) transmitted in the monitoring link are different, so that the influence on the service optical signal can be avoided.

In a first optional example, the position of the point on the reference link can be determined by the transmission distance of the monitoring optical signal from the reference point to the point on the reference link after being reflected back to the reference point (that is, the monitoring optical signal is sent from Return the distance traveled) representation; in the second optional example, the position of a point on the reference link can be represented by the distance from the point to a reference point, where the reference point is the origin of the acquired relationship curve. In both alternative examples, the relationship curve can be represented as a curve of light intensity versus distance.

Illustratively, in the second optional example, the reference point may be the transmitting end of the monitoring optical signal. Since the distance between the transmitting end of the monitoring optical signal and the receiving end of the monitoring optical signal is usually small, the difference between the distances can be ignored. Therefore, the reference point can also be the receiving end of the monitoring optical signal. When the structure of the fault location module 40 is shown in FIG. 8 , the reference point may be the reflected light detection module. In an optional implementation manner, the reflected light detection module may determine the position of the point on the reference link based on the sending time and receiving time of the monitoring optical signal and the transmission speed of the monitoring optical signal. In another optional implementation manner, the reflected light detection module may determine the position of the point on the reference link based on the receiving frequency of the monitored optical signal and the mapping relationship between the frequency and the position, and the mapping relationship between the frequency and the position is used for It represents the correspondence between the receiving frequency of the monitoring optical signal reflected by the point on the reference link received by the reflected light detection module and the position of the point on the reference link.

FIG. 9 is a schematic diagram of a relationship curve corresponding to a reference link provided by an embodiment of the present application. FIG. 9 assumes that the reference link is a link including board 1 , board 2 and board 3 . The horizontal axis of the relationship curve represents the distance, in meters (m), and the vertical axis represents the light intensity, in dBm (decibel milliwatts), and the unit represents the light intensity in watts. The distance may be the transmission distance of the monitoring optical signal from the reference point after being reflected from the point on the reference link and then returning to the reference point, or may be the distance from the point on the reference link to the reference point. In Fig. 9, 11 reflection peaks are formed by the reflection of the monitoring optical signal through the reference link. Reflection peaks refer to the peaks in the relationship curve. The position of each reflection peak in the relationship curve reflects the position of a structure with reflection function in the corresponding reference link, and the structure with reflection function can be an optical device (such as an optical fiber connector) or an optical structure inside the optical device ( Such as LCOS, microlenses, cylindrical mirrors or prisms in a single board, etc.), the 11 reflection peaks in Figure 9 indicate that there are 11 reflective structures in the reference link, which are different from optical fibers. It should be noted that one or more optical structures are usually provided in a single board. Therefore, a single board may correspond to one or more reflection peaks in the relationship curve.

A212. If the difference between the maximum value and the minimum value in the position distribution range of the t-th reflection peak of the multiple relationship curves in the i-th relationship curve group is greater than the preset difference, monitor the position corresponding to the t-th reflection peak in the link. Determine the location for a second fiber optic connector.

For example, the preset difference value may be 5 centimeters (cm). The difference between the maximum value and the minimum value in the position distribution range of the t-th reflection peak of the multiple relationship curves is greater than the preset difference, indicating that the position distribution range is relatively large. Then the larger position distribution range reflects the existence of the t-th reflective structure of the multiple reference links of the ith reference link group and other structures (such as other optical fiber connectors or optical structures inside the board) different location distribution characteristics. And the second optical connector of the i-th pair of optical fiber connectors of the multiple reference links of the i-th reference link group also has the location distribution characteristic. It is indicated that the t structures with reflection function are the second optical connectors to be determined. Based on this, the corresponding position of the t-th reflection peak of the multiple reference links of the ith reference link group (that is, the position of the t-th structure with reflection function) is determined as the multi-reflection peak of the ith reference link group. The position of the second optical fiber connector in the i-th pair of optical fiber connectors of the reference link. Moreover, as mentioned above, the arrangement order of each optical device before the i+1th single board in the ith reference link group is the same, and the arrangement order is the same as that before the i+1th board in the monitoring link. The arrangement order of each optical device is the same. Then, the corresponding position of the t-th reflection peak of the monitoring link is the position of the second optical fiber connector in the i-th pair of optical fiber connectors of the monitoring link. The position corresponding to a certain reflection peak of the monitoring link is also the position corresponding to the peak light intensity (or height) of the reflection peak in the relationship curve of the monitoring link.

Since what needs to be determined is the second optical fiber joint in the i-th pair of optical fiber joints, and there is at least one first optical fiber joint before the second optical fiber joint in the monitoring link, the position of the second optical fiber joint is at least one of the first optical fiber joints in the relationship curve. The position of the second reflection peak, then t>1.

Since at least one single board is connected before the i-th pair of optical fiber connectors, and one single board includes at least one optical structure, therefore, before the second optical fiber connector that needs to be determined in the monitoring link, at least the optical structure and a first optical connector. Therefore, the position of the second optical fiber connector is the position of at least the third reflection peak in the relationship curve, then t>2.

In an optional implementation manner, when comparing multiple relationship curves in the i-th relationship curve group, the fault locating device may traverse each reflection peak according to the arrangement order of the reflection peaks in the relationship curve, so as to determine those with different position distribution characteristics. reflection peak. In this way, 2<t<r, and r is the maximum value among the number of reflection peaks of each relationship curve in the i-th relationship curve group.

In another optional implementation manner, since the fault locating device determines the ith pair of optical connectors based on the link where the first i+1 boards in the ith reference link group are located, the i+1th single The link after the board does not affect the determination of the ith pair of optical connectors, and the reflection peaks of each relationship curve in the ith relationship curve group at least include the reflection peaks corresponding to the link where the first i+1 single boards are located. Therefore, when the fault locating device compares multiple relationship curves in the ith relationship curve group, the minimum value w in the number of reflection peaks of each relationship curve in the ith relationship curve group can be used as the traversal cut-off condition, according to The arrangement order of the reflection peaks in the relationship curve traverses the first w reflection peaks of each relationship curve to determine the reflection peaks with different position distribution characteristics, without traversing all the reflection peaks in each relationship curve, reducing the complexity of comparison. Thus, 2<t<w.

Taking the second relationship curve group corresponding to the second reference link group shown in FIG. 7 as an example, FIG. 10 is a schematic diagram of superposition of the relationship curves in the second relationship curve group provided by the embodiment of the present application. It can be seen from Figure 10 that after the three relationship curves in the second relationship curve group are superimposed, the position distribution ranges of the reflection peaks before the 11th reflection peak in the three relationship curves are basically the same (for example, the position is the same or the position change is smaller than the acceptable value). accept the margin of error), so the curves basically coincide. The positions of the 11th reflection peaks in the 3 relationship curves are all different. The position distribution range of the 3 is 16.3 to 17 meters. Assuming the preset difference is 0.5 meters, the position of the 11th reflection peak in the 3 relationship curves is the largest. The difference between the value and the minimum value is 0.7, and 0.7>0.5, the fault location device can obtain the relationship curve of the monitoring link, and based on the relationship curve of the monitoring link, determine the corresponding position of the 11th reflection peak of the monitoring link as a first The location of the second fiber optic connector. The relationship curve of the monitoring link is used to reflect the relationship between the light intensity of the monitoring optical signal reflected by the point on the monitoring link and the position of the point on the monitoring link, and the reflection peak refers to the peak in the relationship curve.

It should be noted that the fault locating device can sequentially determine a pair of optical fiber connectors corresponding to each reference link group in the order of m-1 reference link groups; it can also determine the corresponding pairs of multiple reference link groups in parallel. The embodiment of this application does not limit the order in which m-1 pairs of optical fiber connectors are determined based on m-1 reference link groups.

In the embodiment of the present application, the fault monitoring device determines the second optical fiber connector by comparing multiple relationship curves in the i-th relationship curve group to determine the reflection peaks whose position distribution range is different from other reflection peaks. FIG. 10 compares the relationship curves in a manner of superimposing a plurality of relationship curves in the i-th relationship curve group. In actual implementation, the comparison of multiple relationship curves in the i-th relationship curve group may also be performed in other ways. For example, for each relationship curve in the i-th relationship curve group, obtain the position of each reflection peak in the order from first to last; obtain the position of the t-th reflection peak in each relationship curve among the multiple relationship curves, and find The position interval between the maximum value and the minimum value among the positions of the t-th reflection peaks of the obtained multiple relationship curves is taken as the position distribution range of the t-th reflection peaks of the multiple relationship curves.

A213. Determine the position corresponding to the t-1th reflection peak in the monitoring link as the position of a first optical fiber connector.

As mentioned above, if the first optical fiber connector is adjacent to the second optical fiber connector in the monitoring link, and the second optical fiber connector is located before the first optical fiber connector, after a second optical fiber connector is determined, based on the relationship of the monitoring link Curve, the position corresponding to the previous reflection peak adjacent to the second optical fiber joint in the monitoring link is determined as the position of a first optical fiber joint, and the first optical fiber joint and the aforementioned second optical fiber joint form a pair of optical fiber joints.

Still taking Figure 10 as an example, after the position corresponding to the 11th reflection peak in the monitoring link is determined as the position of a second optical fiber connector, the corresponding position of the 10th reflection peak in the monitoring link is determined as a first optical fiber connector. s position.

A22. Determine the positions of m boards in the monitoring link based on the positions of the m-1 pairs of optical fiber connectors.

As mentioned earlier, the reference link includes m-1 pairs of fiber optic connectors, and m single boards connected by m-1 pairs of fiber optic connectors. After determining the m-1 pair of optical fiber connectors, you can refer to the position of the m-1 pair of optical fiber connectors to determine the positions of m boards in the monitoring link. For example, after obtaining the relationship curve corresponding to the monitoring link, the position of the m-1 pair of optical fiber connectors can be used as the dividing node to divide the relationship curve corresponding to the monitoring link into m curve segments (it can also be regarded as dividing the relationship curve The corresponding monitoring link is dismantled), the m curve segments are in one-to-one correspondence with the m veneers, and for any curve segment in the m curve segments, the position of each reflection peak in the curve segment belongs to the corresponding veneer s position. That is, the position of a veneer is actually a position interval (also called a position range), and the position of the reflection peak in the curve segment corresponding to the veneer belongs to the position interval.

FIG. 11 is a schematic diagram of a relationship curve corresponding to the monitoring link shown in FIG. 4 according to an embodiment of the present application. As shown in Figure 11, it is assumed that after the positions of the two pairs of optical fiber connectors are determined, the positions of the two pairs of optical fiber connectors can be used as dividing nodes to divide the relationship curve corresponding to the monitoring link into three curve segments. The three curve segments are respectively One-to-one correspondence with the positions of board 1, board 2, and board 3. In this way, the positions of board 1, board 2, and board 3 in the monitoring link can be determined. For example, in FIG. 11 , the position of the veneer 1 is 0 to 11.4 meters, the position of the veneer 2 is 12.8 to 15.2 meters, and the position of the veneer 3 is 16.7 to 19.7 meters.

A23. Obtain the device identifiers of m-1 pairs of optical fiber connectors and the device identifiers of m single boards.

There are multiple ways to obtain the device ID of a board in an optical network device. The embodiments of the present application take the following three acquisition methods as examples for description:

The first acquisition method is to receive the device ID of the board input by the user. The user can input the device identifiers of the boards to the fault location device in sequence according to the connection sequence of the boards in the monitoring link. Correspondingly, the fault location device records the device identifiers of each board according to the input sequence of the device identifiers.

The second acquisition method is to assign a device identifier to a single board according to a preset assignment rule. For example, the backplane has a slot for inserting a single board, and the fault locating device may assign a device identifier to the single board according to the slot into which the single board is inserted. For example, the device identification of the board inserted in the kth slot is "board in the kth slot", 1≤k≤r, and r is the total number of slots. For another example, according to the arrangement order of the slots into which the boards are inserted, the device identifiers are assigned to the boards, and the device identifiers are serial numbers. 001 to 00r.

In the third acquisition method, a unique identification code is set on a single board, and the fault locating device obtains the unique identification code of each single board as the device identification of the single board. The unique identification code of a single board can be the identification code set at the factory of the single board, or the identification code written for the single board after leaving the factory. The unique identification code can be carried on the single board, such as the shell of the single board, so that the user can view it easily. For example, it can be a two-dimensional code.

It should be noted that the foregoing device identifiers may also be obtained in other ways, as long as the acquired device identifiers are convenient for users to quickly find the corresponding board in the optical network device, which is not limited in this embodiment of the present application.

There are many ways to obtain the device identification of the optical fiber connector in the optical network equipment. The embodiments of the present application take the following three acquisition methods as examples for description:

The first acquisition method is to receive the device identifier of the optical fiber connector input by the user. The user can sequentially input the device identifiers of the optical fiber connectors to the fault location device according to the connection sequence of the optical fiber connectors in the monitoring link. Correspondingly, the fault location device records the device identifiers of each optical fiber connector according to the input sequence of the device identifiers. In actual implementation, referring to the first method of obtaining the identification of the single board, the user can input the device of each optical device on the reference link to the fault locating device at one time according to the connection sequence of the single board and the optical fiber connector in the monitoring link. logo. The user can also input the device ID of the board and the device ID of the optical fiber connector respectively.

In the second acquisition method, a device identifier is assigned to the optical fiber connector according to a preset assignment rule.

For example, the backplane has slots for inserting boards, and optical fiber connectors are distributed in the slots. The fault locating device can assign device identifiers to the optical fiber connectors according to the slots where the optical fiber connectors are located. For example, the device identification of the optical fiber connector inserted in the kth slot is "the optical fiber connector in the kth slot", 1≤k≤r, and r is the total number of slots. For another example, according to the arrangement order of the slots to which the optical fiber connectors are inserted, the device identifiers are assigned to the optical fiber connectors, and the device identifiers are serial numbers. is 101 to 10r.

For example, the fault locating apparatus may assign a device identifier to the optical fiber connector according to the device identifier of the board connected to the optical fiber connector. For example, the device identification of the fiber optic connector is generated based on the device identification of the connected single boards. For example, the device of the optical fiber connector connected to the single board 001 is identified as "the optical fiber connector connected to the single board 001".

In the third acquisition method, a unique identification code is set on the optical fiber connector, and the fault locating device obtains the unique identification code of each optical fiber connector as the device identification of the optical fiber connector. The unique identification code of the optical fiber connector can be the identification code set by the optical fiber connector when it leaves the factory, or it can be the identification code written for the optical fiber connector after leaving the factory. The unique identification code can be carried on the optical fiber connector, such as the housing of the optical fiber connector, so as to be easily viewed by the user, for example, it can be a laser code.

It should be noted that the aforementioned device identifiers may also be obtained in other ways, as long as the acquired device identifiers are convenient for users to quickly find the corresponding optical fiber connectors in the optical network equipment, which is not limited in the embodiments of the present application.

A24. Based on the positions of the m-1 pairs of optical fiber connectors, the positions of the m single boards, the device identifications of the m-1 pairs of optical fiber connectors, and the device identifications of the m single boards, establish a corresponding relationship between the positions and the device identifications.

In A24, since the monitoring link is predetermined, the arrangement order of each optical device in the monitoring link is known, and the position of each optical device is known (the position of the optical device is determined by the aforementioned A21, A22), each The device identification of the optical device is known (the device identification of the optical device is determined in A23), and the fault location device can establish the position and the order based on the corresponding relationship between the position and the arrangement order of the optical device, and the corresponding relationship between the device identification and the arrangement order of the optical device. Correspondence of device identification.

As shown in Figure 11, the first board in the monitoring link: the position of board 1 is 0 to 11.4 meters. Assuming that the device ID of the first board obtained based on step A21 is 001, the established position is the same as The corresponding relationship of the device identification includes position: 0 to 11.4 meters corresponding to the device identification: 001. The position of the first optical fiber joint in the first pair of optical fiber joints in the monitoring link is 11.7 meters. Assuming that the device identification of the first optical fiber joint obtained based on step A21 is 101, the established corresponding relationship between the position and the device identification includes the position : 11.7 m corresponds to device identification: 101. Illustratively, based on the relationship curve corresponding to the monitoring link shown in FIG. 11 , the established corresponding relationship between the position and the device identifier may be as shown in Table 1.

Table 1

位置Location	器件标识Device identification
0至11.4米0 to 11.4 meters	001001
12.8到15.2米12.8 to 15.2 meters	002002
16.7到19.7米16.7 to 19.7 meters	003003
11.7米11.7 meters	101101
12.7米12.7 meters	102102
15米15 meters	103103
16.4米16.4 meters	104104

The foregoing embodiment is described by taking the establishment of the correspondence between the position and the device identifier as an example performed by the fault location device. In actual implementation, the foregoing correspondence between the position and the device identifier can also be established automatically by other equipment or manually controlled by other equipment. The established corresponding relationship between the position and the device identification is input to the fault locating device by other equipment, or manually imported into the fault locating device. This embodiment of the present application does not limit the device for establishing the correspondence between the position and the device identifier.

S302. Obtain the position of the fault point on the optical network device in the monitoring link.

In a first optional implementation manner, the fault locating apparatus determines whether there is a link failure in the monitoring link by detecting the optical power loss of the service optical signal in at least a part of the links of the monitoring link. The process includes:

B1. Obtain the optical power loss of at least part of the monitoring links through which the service optical signal passes.

When a link failure occurs in the monitoring link, there is usually a large insertion loss on the monitoring link, and when the link has a large insertion loss, the Rayleigh scattered light signal distributed on the fiber cannot be detected. , so the insertion loss of the link cannot be obtained by changing the intensity of the Rayleigh scattered light signal. In the embodiment of the present application, whether there is a link failure in the monitoring link is detected by acquiring the optical power loss of at least part of the monitoring links through which the service optical signal passes. Thereby, the effective detection of link failure is realized. Optionally, the at least part of the link is usually an intersection of a monitoring link and a service transmission link, and the service transmission link is a link in an optical network device that transmits service optical signals.

Exemplarily, the fault locating device may obtain a link formed by at least two single boards and a backplane in the monitoring link, and detect whether there is a link failure in the monitoring link by monitoring the optical power loss of the service optical signal passing through the link. .

12 is a schematic diagram of an application environment of a fault location apparatus 40 provided by an embodiment of the present application. The fault location apparatus 40 includes a reflected light detection module 401 , a processing module 402 , and a service light detection module (also called a signal light detection module) 403 . The functions of the reflected light detection module 401 and the processing module 402 refer to the functions of the corresponding modules in FIG. 7 . The service optical detection module 403 is used to monitor the optical power loss of the service optical signal passing through the link in the optical network device. Assuming that the service optical signal passes through the backplane of the optical network device and two boards, the service optical detection module 403 is used to monitor the optical power loss of the service optical signal passing through the backplane of the optical network device and the two boards.

For the process of monitoring the optical power loss of the service optical signal passing through the link in the optical network device by the aforementioned service optical detection module 403, reference may be made to the optical performance monitoring (Optical performance monitoring, OPM) technology, or the optical channel monitoring (Optical channel monitoring, OCM) technology, Or pilot optical power detection technology.

Optionally, the optical power loss is the difference between the optical powers detected at the output end of the first single board and the output end of the last single board through which the service optical signal in the monitoring link passes. In this way, the monitoring of the optical power loss of the complete path of the link through which the optical signal of the service passes in the monitoring link can be realized. For example, in FIG. 12 , the service optical detection module 403 is used to obtain the difference between the optical powers of the output ends of the two boards.

B2. After determining that the optical power loss is greater than the optical power loss threshold, determine that there is a link failure on the monitoring link.

When the optical power loss is greater than the optical power loss threshold, it indicates that the loss of the service optical signal in the at least part of the link is relatively large, and the large loss may be caused by a link failure in the monitoring link. Therefore, determine the monitoring There is a link failure on the link. When the optical power loss is not greater than the optical power loss threshold, it indicates that the loss of the service optical signal in the at least part of the link is small, and the possibility of link failure is small. Therefore, it is determined that there is no link failure in the monitoring link. .

The fault locating device sends an optical signal to the circuit, receives the optical signal passing through the circuit, determines the insertion loss of the circuit through the transmitted optical signal and the received optical signal, and determines whether there is a link failure in the circuit based on the insertion loss. For example, when the insertion loss is greater than the insertion loss threshold, it is determined that there is a link failure in the loop, and based on this, it is determined that the monitoring link has a link failure; when the insertion loss is not greater than the insertion loss threshold, it is determined that there is no link failure in the loop, based on this determination There is no link failure on the monitoring link.

C1. Obtain the light intensity of the reflection peak generated by the monitoring link reflecting the monitoring optical signal.

The fault locating device can obtain the relationship curve of the monitoring link, and obtain the light intensity of each reflection peak based on the relationship curve.

C2. In the order of the transmission direction from first to last, compare the light intensity of the reflection peak corresponding to the monitoring link with the preset target light intensity (also called the initial light intensity) in turn, until the light intensity of a certain reflection peak is determined After it does not match the target light intensity, determine the position corresponding to a reflection peak in the monitoring link as the position of the fault point in the monitoring link.

As for the same monitoring link, the positions of the respective optical devices are fixed, so the positions of the respective reflection peaks on the obtained relationship curve of the monitoring link are unchanged (or the position variation is smaller than the acceptable error range). When the fault location device detects the fault point, according to the order of the transmission direction, that is, the order of the reflection peaks on the relationship curve, the light intensity of the reflection peak corresponding to the monitoring link and the prediction are in turn. The set target light intensity is compared to determine the location of the fault point in the monitoring link.

In the embodiment of the present application, the light intensity of the reflection peak can be represented by the height on the relationship curve (also called the actual relationship curve) obtained by the actual monitoring of the reflection peak in step C1, and the target light intensity of the reflection peak can be determined by the reflection peak when the fault occurs. The height representation in the target relationship curve pre-obtained by the positioning device. Then the aforementioned process of sequentially comparing the light intensity of the reflection peak corresponding to the monitoring link with the preset target light intensity may include comparing the actual relationship curve of the monitoring link obtained by actual monitoring with the pre-acquired target corresponding to the monitoring link. The relationship curve performs the corresponding comparison process of the reflection peaks.

Assuming that the first reflection peak is any reflection peak among the multiple reflection peaks in the relationship curve, there are many ways to compare the light intensity of the first reflection peak with the target light intensity to determine the position of the fault point in the monitoring link, The embodiments of the present application are described by taking the following two methods as examples:

In the first way, the position of the fault point in the monitoring link is determined by comparing the light intensity difference of adjacent reflection peaks. The process includes:

D1. Obtain a first light intensity difference between the light intensity of the first reflection peak and the light intensity of the second reflection peak, where the second reflection peak includes reflection peaks located before and/or after the first reflection peak.

Wherein, when the second reflection peak includes a previous reflection peak located in the first reflection peak, the first light intensity difference includes the light intensity difference between the first reflection peak and the previous reflection peak; when the second reflection peak includes When the reflection peak is located after the first reflection peak, the first light intensity difference includes the light intensity difference of the first reflection peak and the light intensity difference of the latter reflection peak.

D2. Obtain a second light intensity difference between the target light intensity of the first reflection peak and the target light intensity of the second reflection peak.

Wherein, when the second reflection peak includes a previous reflection peak located in the first reflection peak, the second light intensity difference includes the difference between the light intensity of the first reflection peak and the target light intensity of the previous reflection peak; when the second reflection peak When including a reflection peak located after the first reflection peak, the second light intensity difference includes the difference between the light intensity of the first reflection peak and the target light intensity of the latter reflection peak.

D3. When the absolute value of the difference between the first light intensity difference and the second light intensity difference is greater than the first absolute value threshold, determine that the position corresponding to the first reflection peak in the monitoring link is the position of the fault point.

Wherein, when the second reflection peak includes the previous reflection peak located in the first reflection peak, and the absolute value of the difference between the first light intensity difference and the second light intensity difference is greater than the first absolute value threshold, it satisfies: |x1- x2|>q; wherein, x1 represents the difference between the light intensity of the first reflection peak and the light intensity of the previous reflection peak, and x2 represents the difference between the target light intensity of the first reflection peak and the target light intensity of the previous reflection peak , q is the first absolute threshold. When the second reflection peak includes a reflection peak located after the first reflection peak, the case where the absolute value of the difference between the first light intensity difference and the second light intensity difference is greater than the first absolute value threshold satisfies: |y1-y2| >q; wherein, y1 represents the difference between the light intensity of the first reflection peak and the light intensity of the latter reflection peak, y2 represents the difference between the target light intensity of the first reflection peak and the target light intensity of the latter reflection peak, q is the first absolute threshold.

It should be noted that when the second reflection peak includes the previous reflection peak and the latter reflection peak located in the first reflection peak, the absolute value of the difference between the first light intensity difference and the second light intensity difference is greater than the first absolute value. The condition of the threshold value satisfies at least one of: |x1-x2|>q, and |y1-y2|>q.

It should be noted that when |x1-x2|>q and |y1-y2|>q, it means that the actual fault point is the corresponding point of the first reflection peak; when |x1-x2|>q, and |y1 When -y2|≤q, it means that the actual fault point is the point between the first reflection peak and its previous reflection peak, but in order to mark the actual fault point, the corresponding point of the first reflection peak and its previous reflection peak The corresponding points are respectively used as fault points; when |x1-x2|≤q, and |y1-y2|>q, it means that the actual fault point is the point between the first reflection peak and the next reflection peak, but for the convenience of marking For the actual fault point, the point corresponding to the first reflection peak and the point corresponding to the next reflection peak are respectively regarded as fault points. In this way, if the fault locating device outputs the device identifiers of two fault points in the subsequent process, and the optical devices indicated by the two device identifiers are adjacent on the monitoring link, it means that the actual fault point occurs in the two device identifiers indicated. between optical components, such as on optical fibers.

Taking FIG. 12 as an example, it is assumed that the difference between the light intensity of the reflection peak 5 and the light intensity of the reflection peak 4 is A1, and the difference between the target light intensity of the reflection peak 5 and the target light intensity of the reflection peak 4 is A2; the reflection peak 5 The difference between the light intensity of the reflection peak 6 and the light intensity of the reflection peak 6 is B1, and the difference between the target light intensity of the reflection peak 5 and the target light intensity of the reflection peak 6 is B2. If |A1-A2|>q and/or |B1-B2|>q, it is determined that the absolute value of the first light intensity difference and the second light intensity difference corresponding to the reflection peak 5 is greater than the first absolute value threshold, and the reflection peak 5 The corresponding position is the position of the fault point. Among them, if |A1-A2|>q and |B1-B2|>q, the corresponding position of reflection peak 5 is the position of the fault point; if |A1-A2|>q and |B1-B2|≤q, reflection peak 4 The position corresponding to the reflection peak 5 is the position of the fault point; if |A1-A2|≤q and |B1-B2|>q, the position corresponding to the reflection peak 5 and the reflection peak 6 is the position of the fault point.

D4. When the absolute value of the difference between the first light intensity difference and the second light intensity difference is not greater than the first absolute value threshold, it is determined that the position corresponding to the first reflection peak in the monitoring link is not the position of the fault point (that is, the normal point location).

Wherein, when the second reflection peak includes the previous reflection peak located in the first reflection peak, and the absolute value of the difference between the first light intensity difference and the second light intensity difference is not greater than the first absolute value threshold, it satisfies: |x1 -x2|≤q; where x1 represents the difference between the light intensity of the first reflection peak and the light intensity of the previous reflection peak, and x2 represents the difference between the target light intensity of the first reflection peak and the target light intensity of the previous reflection peak difference, q is the first absolute threshold. When the second reflection peak includes a reflection peak located after the first reflection peak, and the absolute value of the difference between the first light intensity difference and the second light intensity difference is not greater than the first absolute value threshold, it satisfies: |y1-y2 |≤q; wherein, y1 represents the difference between the light intensity of the first reflection peak and the light intensity of the latter reflection peak, y2 represents the difference between the target light intensity of the first reflection peak and the target light intensity of the latter reflection peak, q is the first absolute threshold.

It should be noted that when the second reflection peak includes the previous reflection peak and the latter reflection peak located in the first reflection peak, the absolute value of the difference between the first light intensity difference and the second light intensity difference is not greater than the first absolute value. The value threshold case satisfies both: |x1-x2|≤q, and |y1-y2|≤q.

In the second way, the light intensity difference of the reflection peaks at the same position is compared to determine the position of the fault point in the monitoring link. The process includes:

E1. Make a difference between the acquired light intensity of the first reflection peak and the target light intensity of the first reflection peak.

E2. When the absolute value of the acquired difference is greater than the second absolute value threshold, determine that the position corresponding to the first reflection peak in the monitoring link is the position of the fault point.

E3. When the absolute value of the acquired difference is not greater than the second absolute value threshold, determine that the position corresponding to the first reflection peak in the monitoring link is not the position of the fault point.

It is worth noting that when there is a fault point in the monitoring link, due to the function of the fault point, the height of the reflection peaks corresponding to each position after the fault point will decrease year-on-year, and there will also be a difference between the light intensity and the target light intensity. The case where the absolute value of the difference is greater than the second absolute value threshold. Therefore, in the second method, after a fault point is detected, the subsequent reflection peaks are no longer compared for light intensities, thus reducing redundant comparison procedures.

It should be noted that, under normal circumstances, when the actual relationship curve corresponding to the monitoring link and the target relationship curve are obtained, the emitted light intensity of the monitoring optical signal is the same. However, if the emitted light intensity of the monitoring optical signal is different, it will cause the overall deviation of the actual relationship curve relative to the target relationship curve. At this time, the fault point determination result obtained by the second method may have problems. , due to the introduction of the light intensity relationship between the first reflection peak and the previous and/or next reflection peak, errors caused by different transmission light intensities of the monitoring optical signal can be avoided. Therefore, the first method is more accurate than the fault point determination result of the second method.

The target light intensity of each of the aforementioned reflection peaks may be pre-recorded by the fault location device, and the target light intensity is the light intensity obtained when the monitoring link does not have a link failure. For example, after installing each single board included in the monitoring link on the optical network device, the fault locating device obtains the target light intensity of each reflection peak generated by the monitoring link reflecting the monitoring optical signal; and stores the obtained target light intensity. . The fault locating device can send a monitoring optical signal to the monitoring link, receive the monitoring optical signal reflected by the link in the optical network equipment, and determine the light intensity of the received optical signal. The fault location device generates a target relationship curve according to the received light intensity of the monitoring optical signal and the determined position of the reflection point corresponding to the light intensity in the link, and obtains the target light intensity of each reflection peak in the target relationship curve . For the structure of the fault locating device, reference may be made to the aforementioned FIG. 8 , and reference may also be made to the corresponding process in FIG. 8 for the generation process of the relationship curve.

S303. Determine the device identifier of the fault point based on the location of the fault point in the monitoring link and the corresponding relationship between the location and the device identifier.

Based on the position of the fault point in the monitoring link, the fault locating device queries the corresponding relationship between the position and the device identifier, and determines the device identifier obtained by the query as the device identifier of the fault point.

S304 , outputting the device identifier of the fault point.

The fault locating device may output alarm information, where the alarm information is used to instruct the user that a link failure occurs in the monitoring link, and the alarm information includes the device identifier. In this way, the user can quickly find the faulty optical device based on the device identification, and then repair or replace the optical device.

It is worth noting that the fault location device can monitor multiple monitoring links, and each monitoring link can be pre-stored with a corresponding target relationship curve. After monitoring a fault point on a monitoring link, the output alarm information A link identification of the failed monitoring link may also be included. In this way, it is convenient for the user to distinguish the monitoring link that has actually failed.

In the embodiment of the present application, when a fault point occurs in the monitoring link of the optical network device, the fault locating device can directly determine whether the fault point is an optical fiber connector or a single board based on the above steps (the above steps D1 to D4 can also be used to determine the fault point. Whether the point appears on the optical fiber), and output the identification of the determined optical device, so as to realize the efficient maintenance or replacement of the optical device, and realize the effective location of the fault point.

In a related art, after it is determined that there is a link failure in the optical network equipment, a secondary inspection can be performed manually, and the location of the failure point can be determined through manual experience. On the one hand, the location accuracy of the fault point is low, and on the other hand, the labor cost is increased. In another related art, the length of the optical fiber in the backplane of the optical network device is calibrated to assist in locating the fault point, and the calibration process is complicated.

In the embodiment of the present application, the fault locating device can directly report the faulty optical device without manual secondary inspection, which reduces the fault maintenance time of the monitoring link in the optical network equipment and saves labor costs. In addition, the embodiments of the present application are implemented based on the hardware structure of the existing optical network equipment, and there is no need to perform additional calibration on the optical fibers of the backplane, and the robustness is high. The fault location method is easy to implement, and can realize automatic fault location of the monitoring link without manual intervention.

It should be noted that the sequence of steps of the fault location method provided by the embodiments of the present application can be appropriately adjusted, and the steps can also be increased or decreased according to the situation. Any person skilled in the art is within the technical scope disclosed in the present application. Changes in methods that can be easily thought of should be covered within the scope of protection of the present application, and thus will not be repeated here. For example, the foregoing S301 may be performed after S302, but it is usually performed before S302, so that after monitoring a link failure in the monitoring link, the device identifier of the fault point can be quickly determined and the delay in locating the fault point can be reduced.

In the embodiment of the present application, the fault locating apparatus may be integrated in the optical network equipment; the fault locating apparatus may also be a monitoring board, and the monitoring board may be inserted into the optical network equipment. When the fault locating device is a monitoring board, the aforementioned monitoring link may or may not include the monitoring board. The embodiments of the present application are described in the following two cases:

In the first case, the monitoring link includes a monitoring board. Exemplarily, the monitoring board is located at the beginning of the monitoring link, and it can send monitoring optical signals to the monitoring link in the optical network device. The boards other than the monitoring board in the monitoring link are usually WSS service boards, which are composed of multiple The cascaded network formed by the two WSS service boards is the link that actually needs to be monitored in the monitoring link. As shown in FIG. 4 , the monitoring board is the single board 1, and the single board 2 and the single board 3 are the WSS service boards. Correspondingly, the obtained relationship curve includes reflection peaks corresponding to the monitoring board. Illustratively, the reflection peaks 1 to 4 of the relational curves shown in FIGS. 9 to 11 are reflection peaks corresponding to the optical structures in the monitoring panel.

In the second case, the monitoring link does not include the monitoring board. For example, the monitoring board is connected to the beginning of the monitoring link, and it can send monitoring optical signals to the monitoring link in the optical network equipment. The single board in the monitoring link is usually a WSS service board, and the monitoring link is the A cascaded network formed by multiple WSS service boards. Then, as shown in FIG. 4 , board 1, board 2, and board 3 in the monitoring link are all WSS service boards. Correspondingly, the acquired relationship curve does not include the reflection peak corresponding to the monitoring board. Exemplarily, the obtained relationship curve removes the first four reflection peaks from the aforementioned FIG. 9 to FIG. 11 .

FIG. 13 is a block diagram of a fault location device 50 provided by an embodiment of the present application. The device 50 includes:

The position acquisition module 501 is used to acquire the position of the fault point on the optical network device in the monitoring link; the determination module 502 is used to obtain the position of the fault point in the monitoring link based on the position and the corresponding relationship between the position and the device identifier , determine the device identification of the fault point, and the corresponding relationship between the position and the device identification is the corresponding relationship between the positions of multiple optical devices in the monitoring link and the device identifications of the multiple optical devices; wherein, the optical network equipment includes a backplane And at least two single boards, the corresponding relationship between the position and the device identification is established based on at least two reference links determined by changing the connection relationship between the at least two single boards in the optical network equipment and the backplane, the The at least two reference links comprise at least part of the monitoring link.

To sum up, the fault locating apparatus provided by the embodiment of the present application can determine the location of the establishment of the at least two reference links and the device identifier based on changing the connection relationship between the at least two single boards and the backplane in the optical network equipment. After the location acquisition module detects a fault point in the monitoring link, the determination module determines the device identifier of the fault point based on the location of the fault point in the monitoring link and the corresponding relationship between the location and the device identifier. In this way, it is possible to determine which optical device the fault point is based on the device identification of the fault point, so as to realize effective fault location.

FIG. 14 is a block diagram of another fault location apparatus 50 provided by an embodiment of the present application. The apparatus 50 includes:

The switching module 503 is configured to change the connection relationship between the at least two single boards and the backplane in the optical network device to determine the at least two reference links. The establishing module 504 is configured to establish the corresponding relationship based on the at least two reference links.

Optionally, the optical network device includes a plurality of optical fiber connectors for connecting the backplane and the single board, the monitoring link includes the m-1 pair of optical fiber connectors, and is connected by the m-1 pair of optical fiber connectors. m single boards, each pair of optical fiber joints in the m-1 pair of optical fiber joints includes a first optical fiber joint and a second optical fiber joint, and in the monitoring link, the first optical fiber joint is adjacent to the second optical fiber joint, and m is Integer greater than 1.

FIG. 15 is a block diagram of a building module 504 provided by an embodiment of the present application. The building module 504 includes:

The first determination sub-module 5041 is used to determine the position of the m-1 pair of optical fiber connectors in the monitoring link based on the at least two reference links; the second determination sub-module 5042 is used to determine the position of the m-1 pair based on the m-1 pair The position of the optical fiber connector, to determine the position of the m single boards in the monitoring link; the acquisition submodule 5043 is used to obtain the device identification of the m-1 pair of optical fiber connectors and the device identification of the m single boards; establish a submodule 5044, for establishing the corresponding relationship based on the positions of the m-1 pair of optical fiber connectors, the positions of the m single boards, the device identifiers of the m-1 pair of optical fiber connectors, and the device identifiers of the m single boards.

In an optional implementation manner, the at least two reference links are divided into: m-1 reference link groups, each reference link group includes multiple reference links, wherein the ith reference link In the road group: each reference link includes at least i+1 boards connected to the backplane, each reference link includes the part of the link where the first i boards of the monitoring link are located, and multiple reference The i+1 th board included in the link is different, 1≤i≤m-1.

Wherein, the first determination sub-module 5041 is used for: acquiring m-1 relation curve groups corresponding to the m-1 reference link groups one-to-one, wherein each reference link corresponds to a relation curve, and each relation The curve is used to reflect the relationship between the light intensity after the monitoring optical signal is reflected by the point on the corresponding reference link and the position of the point on the corresponding reference link; The difference between the maximum value and the minimum value in the position distribution range of the t reflection peaks is greater than the preset difference, and the corresponding position of the t-th reflection peak in the monitoring link is determined as the position of a second optical fiber joint, t>1; The position corresponding to the t-1th reflection peak in the monitoring link is determined as the position of a first optical fiber connector.

Optionally, the location obtaining module 501 is configured to: after determining that there is a link failure in the monitoring link, obtain the location of the fault point on the optical network device in the monitoring link.

FIG. 16 is a block diagram of another fault location apparatus 50 provided by an embodiment of the present application. The apparatus 50 includes:

The optical power loss acquisition module 505 is used to acquire the optical power loss of at least part of the monitoring links through which the service optical signal passes; the fault determination module 506 is used to determine that the optical power loss is greater than the optical power loss threshold, Determine that there is a link failure on the monitoring link.

Exemplarily, the optical power loss is the difference between the optical powers detected at the output end of the first single board and the output end of the last single board through which the service optical signal passes in the monitoring link.

In this embodiment of the present application, the location acquisition module 501 is configured to: acquire the light intensity of the reflection peak generated by the monitoring link reflecting the monitoring optical signal; and sequentially, in the order of the transmission direction, the monitoring link The light intensity of the reflection peak corresponding to the path is compared with the preset target light intensity to determine the position of the fault point in the monitoring link.

FIG. 17 is a block diagram of another fault location apparatus 50 provided by an embodiment of the present application, and the apparatus 50 further includes:

The light intensity acquisition module 507 is configured to acquire the target light intensity of each reflection peak generated by the monitoring link reflecting the monitoring optical signal after each board included in the monitoring link is installed on the optical network device; storing Module 508, configured to store the acquired target light intensity.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or Can be integrated into another module, or some features can be ignored, or not implemented. Illustratively, the fault locating apparatus provided in this embodiment of the present application may be as shown in FIG. 7 or FIG. 12 . Exemplarily, the aforementioned light intensity acquisition module 507 is integrated into the reflected light detection module 401 ; the aforementioned position acquisition module 501 , determination module 502 , switching module 503 , establishment module 504 , fault determination module 506 , and storage module 508 are integrated into the processing module 402 ; The aforementioned optical power loss acquisition module 505 is integrated in the service optical detection module 403 .

FIG. 18 is a possible basic hardware architecture of the fault location apparatus provided by the embodiment of the present application. Referring to FIG. 18 , the fault location apparatus 600 includes a processor 601 , a memory 602 , a communication interface 603 and a bus 604 .

In the fault location apparatus 600, the number of processors 601 may be one or more, and FIG. 18 only illustrates one of the processors 601. Optionally, the processor 601 may be a CPU. If the fault locating apparatus 600 has multiple processors 601, the multiple processors 601 may be of different types, or may be the same. Optionally, the multiple processors 601 of the fault location apparatus 600 may also be integrated into a multi-core processor.

The memory 602 stores computer instructions and data; the memory 602 may store computer instructions and data required to implement the fault location method provided by the present application, for example, the memory 602 stores instructions for implementing the steps of the fault location method. The memory 602 may be any one or any combination of the following storage media: non-volatile memory (eg read only memory (ROM), solid state drive (SSD), hard disk (HDD), optical disk), volatile memory.

The communication interface 603 may be any one or any combination of the following devices: a network interface (eg, an Ethernet interface), a wireless network card, and other devices with a network access function.

The communication interface 603 is used for the fault locating device 600 to perform data communication with other fault locating devices or terminals.

Bus 604 may connect processor 601 with memory 602 and communication interface 603 . In this way, through the bus 604, the processor 601 can access the memory 602, and can also use the communication interface 603 to perform data interaction with other fault location devices or terminals.

In the present application, the fault locating apparatus 600 executes the computer instructions in the memory 602, so that the fault locating apparatus 600 implements the fault locating method provided by the present application.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, is also provided, and the instructions can be executed by the processor of the fault locating apparatus to complete the steps shown in the various embodiments of the present application. Fault location method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and module described above can refer to the corresponding process in the foregoing method embodiments, which is not repeated here.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product comprising one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website, computer, server or data The center transmits to another website site, computer, server or data center by wire (eg coaxial cable, optical fiber, digital subscriber line) or wireless (eg infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes one or more available media integrated. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media (eg, solid state drives), and the like.

An embodiment of the present application provides a fault location system, where the fault location system includes an optical network device and a fault location device. The optical network device may be an OXC device, or a dense networking device similar to the OXC device that uses a backplane to implement cross interconnection between boards. The fault locating device may be any fault locating device in the foregoing embodiments, for example, the fault locating device shown in any of FIG. 7 , FIG. 12 , FIG. 13 , FIG. 14 , and FIGS. 16 to 18 .

It is worth noting that the fault locating device can be integrated in the optical network equipment; the fault locating device can also be a monitoring board, and the monitoring board can be inserted into the optical network equipment.

In this application, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "at least one" refers to one or more, and the term "plurality" refers to two or more, unless expressly limited otherwise. A refers to B, which means that A is the same as B or A is a simple variation of B. The wavelength channel A corresponds to the wavelength channel B means that the wavelengths of the wavelength channel A and the wavelength channel B are the same. The "wavelength" in the foregoing embodiments of the present application all refer to the wavelength of light, and the "power" all refer to the power of the light.

It should be noted that: when the fault locating apparatus provided in the above embodiment executes the fault locating method, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions may be allocated to different functional modules as required. To complete, that is, to divide the internal structure of the device into different functional modules to complete all or part of the functions described above. In addition, the fault locating apparatus provided in the above embodiments and the fault locating method embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

The above descriptions are only optional embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A fault location method, characterized in that the method comprises:

Obtain the location of the fault point on the optical network equipment in the monitoring link;

Based on the position of the fault point in the monitoring link, and the corresponding relationship between the position and the device identification, the device identification of the fault point is determined, and the corresponding relationship between the position and the device identification is the number of The correspondence between the positions of the plurality of optical devices and the device identifiers of the plurality of optical devices;

Wherein, the optical network device includes a backplane and at least two single boards, and the corresponding relationship between the position and the device identification is based on changing the connection between the at least two single boards in the optical network device and the backplane The at least two reference links determined by the relationship are established, and the at least two reference links include at least part of the monitoring link.
The method according to claim 1, wherein the method further comprises:

changing the connection relationship between the at least two single boards and the backplane in the optical network device to determine the at least two reference links;

Based on the at least two reference links, the corresponding relationship is established.
The method according to claim 2, wherein the optical network device comprises a plurality of optical fiber connectors for connecting the backplane and the single board, and the monitoring link comprises m-1 pairs of optical fiber connectors, And m single boards connected by the m-1 pairs of optical fiber connectors, each pair of optical fiber connectors in the m-1 pairs of optical fiber connectors includes a first optical fiber connector and a second optical fiber connector, and the first optical fiber connector in the monitoring link. An optical fiber connector is adjacent to the second optical fiber connector, and m is an integer greater than 1;

The establishing the corresponding relationship based on the at least two reference links includes:

based on the at least two reference links, determining the position of the m-1 pair of fiber optic connectors in the monitoring link;

determining the positions of the m single boards in the monitoring link based on the positions of the m-1 pairs of optical fiber connectors;

Obtain the device identifiers of the m-1 pairs of optical fiber connectors and the device identifiers of the m single boards;

The corresponding relationship is established based on the positions of the m-1 pairs of optical fiber connectors, the positions of the m single boards, the device identifiers of the m-1 pairs of optical fiber connectors, and the device identifiers of the m single boards.
The method according to claim 3, wherein the at least two reference links are divided into: m-1 reference link groups, each reference link group includes a plurality of reference links, wherein the i-th reference link group is divided into: In a reference link group: each reference link includes at least i+1 boards connected to the backplane, and each reference link includes the partial link where the first i boards of the monitoring link are located , and the i+1th board included in the multiple reference links is different, 1≤i≤m-1.
The method according to claim 4, wherein the determining the positions of the m-1 pairs of optical fiber connectors in the monitoring link based on the at least two reference links comprises:

Obtain m-1 relationship curve groups corresponding to the m-1 reference link groups one-to-one, wherein each reference link corresponds to a relationship curve, and each relationship curve is used to reflect the reference chain to which the monitoring optical signal is corresponding The relationship between the reflected light intensity of the point on the road and the position of the point on the corresponding reference link;

If the difference between the maximum value and the minimum value in the position distribution range of the t-th reflection peak of the multiple relationship curves in the i-th relationship curve group is greater than the preset difference, the corresponding position of the t-th reflection peak in the monitoring link Determined as the position of a second optical fiber connector, t>1;

The position corresponding to the t-1th reflection peak in the monitoring link is determined as the position of a first optical fiber connector.
The method according to any one of claims 1 to 5, wherein the acquiring the position of the fault point on the optical network device in the monitoring link comprises:

After it is determined that the monitoring link has a link failure, the position of the fault point on the optical network device in the monitoring link is obtained.
The method according to claim 6, wherein the method further comprises:

obtaining the optical power loss of at least part of the monitoring links through which the service optical signal passes;

After it is determined that the optical power loss is greater than the optical power loss threshold, it is determined that the monitoring link has a link failure.
The method according to claim 7, wherein the optical power loss is the output end of the first single board and the output end of the last single board through which the service optical signal in the monitoring link passes Difference in detected optical power.
The method according to any one of claims 1 to 8, wherein the acquiring the position of the fault point on the optical network device in the monitoring link comprises:

obtaining the light intensity of the reflection peak generated by the monitoring link reflecting the monitoring optical signal;

The light intensity of the reflection peak corresponding to the monitoring link is compared with the preset target light intensity in order according to the transmission direction, so as to determine the position of the fault point in the monitoring link.
The method according to claim 9, wherein the method further comprises:

After installing each single board included in the monitoring link on the optical network device, obtain the target light intensity of each reflection peak generated by the monitoring link reflecting the monitoring optical signal;

Stores the acquired target light intensity.
A fault location device, characterized in that the device comprises:

The location acquisition module is used to acquire the location of the fault point on the optical network equipment in the monitoring link;

A determination module, configured to determine the device identification of the fault point based on the position of the fault point in the monitoring link and the corresponding relationship between the position and the device identification, and the corresponding relationship between the position and the device identification is the monitoring the correspondence between the positions of the multiple optical devices in the link and the device identifiers of the multiple optical devices;

Wherein, the optical network device includes a backplane and at least two single boards, and the corresponding relationship between the position and the device identification is based on changing the connection between the at least two single boards in the optical network device and the backplane The at least two reference links determined by the relationship are established, and the at least two reference links include at least part of the monitoring links.
The apparatus of claim 11, wherein the apparatus further comprises:

a switching module, configured to change the connection relationship between the at least two single boards and the backplane in the optical network device to determine the at least two reference links;

A establishing module, configured to establish the corresponding relationship based on the at least two reference links.
The apparatus according to claim 12, wherein the optical network equipment comprises a plurality of optical fiber connectors for connecting the backplane and the single board, and the monitoring link comprises m-1 pairs of optical fiber connectors, And m single boards connected by the m-1 pairs of optical fiber connectors, each pair of optical fiber connectors in the m-1 pairs of optical fiber connectors includes a first optical fiber connector and a second optical fiber connector, and the first optical fiber connector in the monitoring link. An optical fiber connector is adjacent to the second optical fiber connector, and m is an integer greater than 1; the establishment module includes:

a first determination submodule, configured to determine the position of the m-1 pair of optical fiber connectors in the monitoring link based on the at least two reference links;

a second determination submodule, configured to determine the positions of the m single boards in the monitoring link based on the positions of the m-1 pairs of optical fiber connectors;

Obtaining a submodule for obtaining the device identifiers of the m-1 pairs of optical fiber connectors and the device identifiers of the m single boards;

A submodule is established for establishing a sub-module based on the positions of the m-1 pairs of optical fiber connectors, the positions of the m single boards, the device identifiers of the m-1 pairs of optical fiber connectors and the device identifiers of the m single boards. the corresponding relationship.
The apparatus according to claim 13, wherein the at least two reference links are divided into: m-1 reference link groups, each reference link group includes a plurality of reference links, wherein the i-th reference link group is divided into m-1 reference link groups. In a reference link group: each reference link includes at least i+1 boards connected to the backplane, and each reference link includes the partial link where the first i boards of the monitoring link are located , and the i+1 th board included in the multiple reference links is different, 1≤i≤m-1.
The apparatus according to claim 14, wherein the first determination submodule is configured to:

Obtain m-1 relationship curve groups corresponding to the m-1 reference link groups one-to-one, wherein each reference link corresponds to a relationship curve, and each relationship curve is used to reflect the reference chain to which the monitoring optical signal is corresponding The relationship between the reflected light intensity of the point on the road and the position of the point on the corresponding reference link;

If the difference between the maximum value and the minimum value in the position distribution range of the t-th reflection peak of the multiple relationship curves in the i-th relationship curve group is greater than the preset difference, the corresponding position of the t-th reflection peak in the monitoring link Determined as the position of a second optical fiber connector, t>1;

The position corresponding to the t-1th reflection peak in the monitoring link is determined as the position of a first optical fiber connector.
The device according to any one of claims 11 to 15, wherein the position acquisition module is configured to:

After it is determined that the monitoring link has a link failure, the position of the fault point on the optical network device in the monitoring link is obtained.
The apparatus of claim 16, wherein the apparatus further comprises:

an optical power loss acquisition module, configured to acquire the optical power loss of at least part of the monitoring links through which the service optical signal passes;

A fault determination module, configured to determine that the monitoring link has a link fault after determining that the optical power loss is greater than an optical power loss threshold.
The device according to claim 17, wherein the optical power loss is the output end of the first single board and the output end of the last single board through which the service optical signal in the monitoring link passes Difference in detected optical power.
The device according to any one of claims 11 to 18, wherein the position acquisition module is configured to:

obtaining the light intensity of the reflection peak generated by the monitoring link reflecting the monitoring optical signal;

The light intensity of the reflection peak corresponding to the monitoring link is compared with the preset target light intensity in order according to the transmission direction, so as to determine the position of the fault point in the monitoring link.
The apparatus of claim 19, wherein the apparatus further comprises:

an optical intensity acquisition module, configured to acquire the target light of each reflection peak generated by the monitoring link reflecting the monitoring optical signal after each board included in the monitoring link is installed on the optical network device powerful;

The storage module is used to store the acquired target light intensity.
A fault location device, characterized in that the device comprises:

processor and memory;

The memory stores computer instructions; the processor executes the computer instructions stored in the memory, so that the fault locating apparatus executes the fault locating method according to any one of claims 1 to 10 .
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, and the computer instructions instruct a computer device to execute the fault location method of any one of claims 1 to 10.
A chip, characterized in that the chip includes a programmable logic circuit and/or program instructions, which are used to execute the fault location method according to any one of claims 1 to 10 when the chip is running.
A fault locating system is characterized in that, comprising: optical network equipment and the fault locating device according to any one of claims 11 to 20.