CN115733545A - Method and device for detecting performance abnormity of optical splitter - Google Patents

Abstract

The embodiment of the present application proposes a method and device for detecting abnormal performance of an optical splitter. In the above abnormal performance detection, after the optical signal strength of the optical network unit is acquired in advance, trend analysis is performed on it. If the data of the optical signal strength changes If the trend continues to go down, it is determined that the data is abnormal data, and if the optical signal strengths of at least two optical network units ONUs are abnormal data and the difference in the reduction range is less than the first threshold, then it is determined that the above-mentioned at least two optical network units ONUs have a common The directly connected optical splitter is an optical splitter with abnormal performance, and then the abnormal performance status of the directly connected optical splitter can be judged directly through the data correlation degree of at least two optical network units, thereby improving the troubleshooting speed.

Description

A method and device for detecting abnormal performance of an optical splitter

【Technical field】

The embodiments of the present application relate to the communication field, and in particular, to a method and device for detecting abnormal performance of an optical splitter.

【Background technique】

The current home broadband network usually adopts passive optical network (PON) technology to realize broadband home access. An optical network line usually includes an optical line terminal (optical line terminal, OLT), an optical splitter (Splitter) and an optical network unit ( optical network unit, ONU).

Among them, the optical splitter is a passive device, which does not have the functions of detecting performance data, reporting alarms and other telecommunications equipment functions, so it is a monitoring blind spot in the home broadband network. In the daily maintenance of home broadband, the failure of the optical splitter can only be tested step by step on-site in the case of user complaints or business interruptions, to troubleshoot and locate the fault point, which consumes manpower and material resources, and the slow speed of positioning leads to slow resolution, which directly affects user satisfaction.

【Content of invention】

Embodiments of the present application provide a method and device for detecting abnormal performance of an optical splitter, so that broadband line inspection personnel can directly locate the faulty optical splitter after finding a fault in a certain optical network unit, and improve the troubleshooting speed.

In the first aspect, an embodiment of the present application provides a method for detecting abnormal performance of an optical splitter, the method is applied to an optical splitter in an optical network system, and the optical network system includes at least one optical splitter and each optical splitter directly connected at least two optical network units ONU, the method comprising:

Obtain the optical signal strength of the ONU N times within a preset period of time, where N≥2;

In the ONU of the optical network system, at least two target ONUs whose optical signal strengths continue to decrease for N times are obtained, and if the difference values of the reduction ranges between the optical signal strengths of the at least two target ONUs are less than the first threshold, then It is determined that the target optical splitter to which the at least two target ONUs are directly connected is an optical splitter with abnormal performance.

In the method for detecting the abnormal performance of the optical splitter described above, after the optical signal strength of the optical network unit is obtained in advance, trend analysis is performed on it. If the data change trend of the optical signal strength is continuously low, it is determined that the data is abnormal data. If at least two The optical signal strengths of the optical network units ONU are all abnormal data and the difference value of the reduction amplitude is less than the first threshold value, then it is determined that the optical splitter directly connected to the at least two optical network units ONU is an optical splitter with abnormal performance, and then it can directly pass at least The degree of data correlation between two optical network units can determine the abnormal performance status of the optical splitter directly connected to them, thereby improving the troubleshooting speed.

In one possible implementation manner, the optical splitter in the optical network system further includes at least one parent optical splitter, and if the target optical splitter is directly connected to the parent optical splitter, the target optical splitter is a child target optical splitter , the method further includes: if the reduction magnitude difference values between the optical signal intensities corresponding to the at least two sub-target optical splitters are smaller than the second threshold; Abnormal performance beam splitter.

In one possible implementation manner, the step of determining that the target optical splitter that the at least two target ONUs are directly connected to is an optical splitter with abnormal performance includes: in the first correspondence between the preset ONU and the connected optical splitter In the relationship, the target optical splitter connected to the target ONU is searched; if there are at least two target optical splitters directly connected to the target ONU, it is determined that the target optical splitter is an optical splitter with abnormal performance.

In one possible implementation manner, the optical network system further includes an optical line terminal connected to at least one optical splitter, and the method further includes: connecting the preset optical splitter and the connected optical line terminal In the second corresponding relationship, the port of the optical line terminal connected to the abnormal optical splitter is searched; if there are at least two ports of the optical line terminal directly connected to the abnormal optical splitter, the at least two abnormal optical splitters correspond to If the difference values of the reduction ranges between the optical signal strengths are all smaller than the third threshold, it is determined that the port of the optical line terminal is a port with abnormal performance.

In the second aspect, the embodiment of the present application provides a device for detecting abnormal performance of an optical splitter. The device is applied to an optical splitter in an optical network system. The optical network system includes at least one optical splitter and each optical splitter is directly connected to At least two optical network units ONU, the device includes: an obtaining module, used to obtain the optical signal strength of the ONU N times within a preset period of time, where N≥2; a judging module, used in the Among the ONUs of the optical network system, at least two target ONUs whose optical signal strengths continue to decrease for N times are obtained, and if the difference values of the reduction ranges between the optical signal strengths of the at least two target ONUs are all smaller than a first threshold, determine that the at least two target ONUs The sub-target optical splitter that is directly connected to the two target ONUs is an optical splitter with abnormal performance.

In one possible implementation manner, the determination module is further configured to determine that the at least two sub-targets The parent optical splitter to which the optical splitters are connected is the optical splitter with abnormal performance.

In one possible implementation manner, the device further includes: a search module, configured to search for the target optical splitter connected to the target ONU in the first correspondence between the preset ONU and the connected sub-optical splitter The determining module is further configured to determine that the target optical splitter is an optical splitter with abnormal performance if there are at least two target optical splitters directly connected to the target ONU.

In one possible implementation manner, the search module is further configured to search for the port of the optical line terminal connected to the abnormal optical splitter in the second correspondence between the preset optical splitter and the connected optical line terminal The judging module is also used for if there are at least two ports of the optical line terminal directly connected to the abnormal optical splitters, and the difference values of the reduction ranges between the optical signal intensities corresponding to the at least two abnormal optical splitters are less than If the third threshold is used, it is determined that the port of the optical line terminal is a port with abnormal performance.

In a third aspect, the embodiment of the present application also provides an optical splitter performance abnormality detection device, including: a memory; and a processor coupled to the memory, the processor is configured to , execute the method provided by the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores computer program instructions, and the computer program instructions are used by one or more processors to cause the computer to execute the first aspect provided method.

It should be understood that the second to fourth aspects of the embodiments of the present application are consistent with the technical solutions of the first aspect of the embodiments of the present application, and the beneficial effects obtained by the various aspects and the corresponding feasible implementation modes are similar, so details are not repeated here.

【Description of drawings】

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of this specification. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a network topology diagram of an optical network system provided by an embodiment of the present application;

FIG. 2 is a schematic flow diagram of a method for detecting abnormal performance of an optical splitter provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a data cleaning process provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of judging the performance abnormality of the port of the optical line terminal provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an optical splitter performance abnormality detection device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an optical splitter performance abnormality detection device provided by another embodiment of the present application;

FIG. 7 is a schematic structural diagram of an optical splitter performance abnormality detection device provided by another embodiment of the present application.

【Detailed ways】

In order to better understand the technical solutions of the present specification, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments in this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this specification.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the description. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

In order to facilitate the understanding of the present invention, the relevant technical names involved in the present application are now described.

passive optical network

Passive optical network is a point-to-multipoint optical fiber transmission and access technology, which includes an optical line terminal, an optical distribution network (ODN) and an optical network unit, wherein the optical distribution network includes optical splitters, optical fiber cables, A series of passive components such as optical cable distribution boxes and optical cable junction boxes. Passive optical network optical line terminals are used to provide optical fiber network interfaces for other network devices, optical distribution networks are used to transmit optical signals, and optical network units are used to provide network access services for user terminals.

Network topology

Network topology (network topology, NT) structure refers to the physical layout of interconnecting various devices with transmission media, especially where computers are distributed and how cables connect them. The network topology can reflect the structural relationship of the network, and the difference in the network topology has an important impact on the performance and reliability of the network. Therefore, the network topology plays a very important role in network construction and troubleshooting.

In the existing related technology, the fault of the optical splitter can only be tested step by step on site in the case of user complaints, business interruption, etc., to troubleshoot and locate the fault point, which consumes manpower and material resources, and the positioning speed is slow, and the solution speed is slow, which directly affects the user's satisfaction. Spend.

Based on the above problems, an embodiment of the present application provides a method for detecting abnormal performance of optical splitters, which can determine the abnormal performance status of directly connected optical splitters by judging the data trends of at least two optical network units, and improve the troubleshooting speed.

FIG. 1 is a network topology diagram of an optical network system provided by an embodiment of the present application, including an optical line terminal, a primary optical splitter, a secondary optical splitter, and an optical network unit.

Optionally, the optical line terminal is the central office equipment in the optical transmission network, which is used to provide the optical fiber interface of the passive optical fiber network for the optical access network, and the network equipment in the optical network system provides optical signals; the optical line terminal can also be used It is used to realize the control and management function of the optical network unit. The network equipment here includes optical splitters (primary optical splitters or secondary optical splitters) and optical network units.

The first-level optical splitter and the second-level optical splitter are used to distribute the optical signal received by the uplink interface to multiple downlink interfaces, and these downlink interfaces transmit the optical signal; of course, the first-level optical splitter and the second-level optical splitter can also be used to divide multiple The optical signals received by each downlink interface are transmitted to the uplink interface, and the uplink interface transmits these optical signals. It should be noted that both the first-level optical splitter and the second-level optical splitter include an uplink interface, but their downlink interfaces can include multiple ones, such as a 1:2 optical splitter (first-level optical splitter or second-level optical splitter) can include one An uplink interface and two downlink interfaces, and a 1:4 optical splitter (first-level optical splitter or second-level optical splitter) may include one uplink interface, four downlink interfaces, and so on. The uplink interface here refers to the interface connected to the upper-layer network equipment in the optical network system. For example, the uplink interface of the first-level optical splitter refers to the interface connected to the optical line terminal, and the uplink interface of the second-level optical splitter refers to the interface connected to the first-level optical splitter; The downlink interface refers to the interface connected to the lower-layer network equipment in the optical network system. For example, the downlink interface of the first-level optical splitter refers to the interface connected to the second-level optical splitter, and the downlink interface of the second-level optical splitter refers to the interface connected to the terminal. The terminal here may be a mobile phone, a computer, and may also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a smart phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant ( personal digital assistant, PDA), laptop computer, handheld communication device, handheld computing device, satellite wireless device, wireless modem card, TV set top box (STB), customer premise equipment (customer premise equipment, CPE) and/or other devices for communicating over a wireless system.

The optical network unit is used to receive the optical signal sent by the optical line terminal, and selectively receive the received optical signal; the optical network unit can also be used to send a response signal to the optical line terminal after receiving the optical signal; of course, the optical network unit The network unit can also send the Ethernet data of the terminal to the optical line terminal.

It should be noted that the network topology of the optical transmission network shown in Figure 1 is only exemplary. In practice, other primary optical splitters can also be connected under the optical line terminal, and these primary optical splitters can pass through the secondary optical splitter. It is connected with the optical network unit; of course, the first-level optical splitter can also be connected with the optical network unit without the forwarding of the second-level optical splitter. The same number of ONUs connected to each secondary optical splitter shown in FIG. 1 is only exemplary. In practice, the number of ONUs connected to each secondary optical splitter may also be different.

Fig. 2 is a schematic flow chart of a method for detecting an abnormal performance of an optical splitter provided in an embodiment of the present application. As shown in the figure, the above-mentioned method for detecting an abnormal performance of an optical splitter may include:

Step S101 , within a preset period of time, obtain the optical signal strength of the ONU N times, where N≥2.

Optionally, the optical signal strength of the optical network unit ONU may be collected by a signal collection device, and the signal collection device may collect the optical signal strengths of all optical network units ONUs in the optical network system.

It should be noted that the above-mentioned signal collection device may be a built-in probe of the optical network unit ONU, an optical power meter, or other equipment for collecting optical signal strength, which is not limited in this embodiment of the present application. In addition, in the process of obtaining the optical signal intensity, the signal acquisition device may collect data within a preset period of time, and the optical splitter performance abnormality detection device may receive it in real time; Receive data at a preset time period.

Optionally, after obtaining the data of the optical signal intensity, data cleaning can be performed, and the specific steps are shown in Figure 3, including:

Step S1011, removing values whose extreme difference is smaller than the first preset value;

Step S1012, removing the value whose overrun threshold is greater than the second preset value;

Step S1013, removing the value whose overrun ratio threshold is greater than the third preset value;

Step S1014, obtaining the cleaned optical signal intensity data.

Optionally, due to the detection factors of the detection equipment itself, noise data may appear, and the existence of these noise data will affect the final detection result. The range is the value of the maximum value minus the minimum value of the optical signal intensity within the preset time period, and removing the value of the range smaller than the first preset value can reduce the dispersion of the above-mentioned optical signal intensity data to the expected range; The overlimit threshold is |sample value-average|/average value, which is the threshold value for judging whether the jump data belongs to noise in the above optical signal strength data; the overlimit ratio threshold is the number of overlimit samples/total number of samples , which reflects the hopping frequency of the optical signal intensity data.

Preferably, the first preset value is 1dbm, the second preset value is 0.15, and the third preset value is 0.01.

It should be noted that the order of the above data cleaning steps may be reversed, or other data cleaning steps may be used, and any method capable of denoising may be used, which is not limited in this embodiment of the present application. The specific preset value is the relevant standard threshold value of the optical signal intensity determined by those skilled in the art according to the signal transmission, and the threshold value data that can be determined not to affect the final determination result shall prevail.

Step S102, among the ONUs of the optical network system, at least two target ONUs whose optical signal strengths continue to decrease for N times are obtained, if the difference values of the reduction ranges between the optical signal strengths of the at least two target ONUs are both smaller than the first threshold, then it is determined that the target optical splitter that the at least two target ONUs are directly connected to is an optical splitter with abnormal performance.

Further, the step of determining that the target optical splitter that the at least two target ONUs are directly connected to is an optical splitter with abnormal performance includes: searching for the target ONU in the first corresponding relationship between the preset ONU and the connected optical splitter The connected target optical splitter; if there are at least two target optical splitters directly connected to the target ONU, it is determined that the target optical splitter is an optical splitter with abnormal performance.

Optionally, because the optical network unit ONU is directly connected under the optical splitter, when the performance of an optical splitter is abnormal, all the optical network units ONU connected under the optical splitter will have the same degree of waveform degradation, which can be used for positioning judge. However, since the continuous decrease of data in multiple optical network units may be caused by its own equipment, after detecting the continuous decrease of data in multiple optical network units, it cannot be simply concluded from the connection relationship that multiple optical network units are connected together It is concluded that the optical splitter is an optical splitter with abnormal performance, and it is necessary to calculate the difference value of the data reduction range among multiple optical network units to further judge the performance status of the optical splitter.

Exemplarily, as shown in FIG. 1 , taking the secondary optical splitter 1-1 and its optical network unit as an example, when it is detected that the optical network unit 1-1-1, the optical network unit 1-1-2, ..., After the optical signal strength of the optical network unit 1-1-N continues to decrease for N times, use the Pearson coefficient algorithm to calculate the above optical network unit 1-1-1, optical network unit 1-1-2, ..., optical network unit 1 - 1-N correlation coefficient, according to the calculation result of the correlation coefficient to determine the degree of correlation between the optical network units, if the degree of correlation is higher than the first threshold, it is determined that the secondary optical splitter 1-1 is an optical splitter with abnormal performance.

The Pearson coefficient is defined as the quotient of the covariance and standard deviation between two variables, calculated as:

The judgment result of the correlation coefficient is usually obtained by comparing the following table:

Table 1

correlation coefficient judgement result 0.8-1.0 Strong correlation 0.6-0.8 strong correlation 0.4-0.6 Moderately related 0.2-0.4 weak correlation 0.0-0.2 Very weak or no correlation

Take an example where there are three target ONUs in the secondary optical splitter 1-1. The three target ONUs are A, B, and C respectively, and three sets of correlation coefficients are calculated by using the Pearson coefficient algorithm: corrAB, corrAC, and corrBC. In this embodiment, the first threshold value is 0.9, and when the correlation coefficients corrAB, corrAC, and corrBC are all greater than 0.9, the secondary optical splitter 1-1 is marked as an optical splitter with abnormal performance.

It should be noted that, the value of the first threshold is between 0.8-1.0, and can be established by those skilled in the art according to precise requirements.

Further, the optical splitter in the optical network system further includes at least one parent optical splitter, if the target optical splitter is directly connected to the parent optical splitter, the target optical splitter is a child target optical splitter, and the method further includes : determining that the parent optical splitter to which the at least two sub-target optical splitters are directly connected is an optical splitter with abnormal performance.

Optionally, when the detected at least two target optical splitters are also directly connected to the same parent optical splitter, the difference between the optical signal intensities of at least two or more target ONUs under the above-mentioned at least two target optical splitters is less than The first threshold is the optical splitter with abnormal performance. After that, select a corresponding target ONU in the optical splitter with abnormal performance connected to the parent optical splitter. If the difference between the optical signal strengths of the selected target ONUs is less than two thresholds, it can be determined that the parent optical splitter is an optical splitter with abnormal performance.

Exemplarily, as shown in FIG. 1 , taking the first-level optical splitter 1, the second-level optical splitter 1-1, the second-level optical splitter 1-2 and their optical network units as examples, when it is judged that the second-level optical splitter 1 After -1 and secondary optical splitter 1-2 are both optical splitters with abnormal performance, select one of the target ONUs subordinate to secondary optical splitter 1-1 and secondary optical splitter 1-2, and use the Pearson coefficient algorithm to calculate Calculate the correlation coefficient between the two target ONUs, and judge the correlation degree between the secondary optical splitters according to the calculation result of the correlation coefficient. If the correlation degree is higher than the second threshold, it is determined that the primary optical splitter 1 is an optical splitter with abnormal performance. See Table 1 for the judgment of the degree of results.

Take the primary optical splitter 1 with three secondary optical splitters with abnormal performance as an example. Take any target ONU under the secondary optical splitter with abnormal performance, and the three target ONUs are A, B, and C respectively, and use the Pearson coefficient algorithm to calculate the correlation coefficient between the optical signal intensity data corresponding to the three target ONUs , corresponding to three sets of correlation coefficients: corrAB, corrAC, corrBC.

In this embodiment, the second threshold is 0.9, and when the correlation coefficients corrAB, corrAC, and corrBC are all greater than 0.9, the primary optical splitter 1 is marked as an optical splitter with abnormal performance.

It should be noted that the value of the second threshold is between 0.8-1.0, and can be established by those skilled in the art according to precise requirements.

Further, the optical network system further includes an optical line terminal, and the optical line terminal is connected to at least one optical splitter, and the method further includes: in the second corresponding relationship between the preset optical splitter and the connected optical line terminal , searching for the port of the optical line terminal connected to the abnormal optical splitter; if there are at least two ports of the optical line terminal directly connected to the abnormal optical splitter, determining that the port of the optical line terminal is a port with abnormal performance.

Optionally, when the detected at least two target optical splitters are also directly connected to the port of the same optical line terminal, it is determined that there are at least two target ONUs under the above-mentioned at least two target optical splitters. Values are all less than the first threshold, that is, they are all optical splitters with abnormal performance. Then select a corresponding target ONU from the optical splitter with abnormal performance connected to the port of the optical line terminal. If the optical signal strength of the selected target ONU decreases If the amplitude difference values are all smaller than the third threshold, it can be determined that the port of the optical line terminal is a port with abnormal performance.

Exemplarily, as shown in FIG. 1 , taking the optical line terminal, the primary optical splitter 1, the primary optical splitter 2 and their optical network units as examples, when it is judged that the primary optical splitter 1 and the primary optical splitter 2 After they are all optical splitters with abnormal performance, choose one of the target ONUs subordinate to primary optical splitter 1 and primary optical splitter 2, and use the Pearson coefficient algorithm to calculate the correlation coefficient between the two target ONUs. The calculation results determine the degree of correlation between the first-level optical splitters. If the degree of correlation is higher than the third threshold, it is determined that the optical line terminal port connected to the first-level optical splitter 1 and the first-level optical splitter 2 is a port with abnormal performance. Refer to Table 1 for the judgment of the results.

Take three primary optical splitters with abnormal performance at the optical line terminal port as an example. Take any target ONU under the first-level optical splitter with abnormal performance, and the three target ONUs are A, B, and C respectively, and use the Pearson coefficient algorithm to calculate the correlation coefficient between the optical signal intensity data corresponding to the three target ONUs , corresponding to three sets of correlation coefficients: corrAB, corrAC, corrBC.

In this embodiment, the third threshold is 0.9, and when the correlation coefficients corrAB, corrAC, and corrBC are all greater than 0.9, the optical line terminal port is marked as a port with abnormal performance.

It should be noted that, the value of the third threshold is between 0.8-1.0, and can be established by those skilled in the art according to precise requirements.

Exemplarily, a schematic flowchart of judging the performance abnormality of the port of the optical line terminal is shown in FIG.

Step S201, acquiring a preset first corresponding relationship between an ONU and a connected optical splitter and a second corresponding relationship between an optical splitter and a connected optical line terminal.

Optionally, the corresponding relationship between the ONU and the connected optical splitter and the corresponding relationship between the optical splitter and the connected optical line terminal have been stored in the database in advance.

Step S202, judging whether the variation ranges of the optical signal intensities of the ONUs under the same secondary optical splitter are similar, if not, it is determined that it is a problem with the ONU itself, not a problem with the optical splitter; if they are similar, then execute step S203.

Step S203, judging whether the variation ranges of the optical signal strengths of ONUs under different secondary optical splitters under the same level of primary optical splitter are similar, if not, it is determined that the performance of the secondary optical splitter is abnormal; if similar, then execute step S204 .

Step S204, judging whether the variation ranges of the optical signal strengths of the ONUs under the different first-level optical splitters of the ports of the same optical line terminal are similar, if not, it is determined that the performance of the first-level optical splitter is abnormal; The port performance of the line termination is abnormal.

Optionally, after the information about the target ONU, abnormal optical splitter and abnormal port is obtained, relevant device information may be output for viewing by maintenance personnel.

Fig. 5 is a schematic structural diagram of an optical splitter performance abnormality detection device provided by an embodiment of the present application, which is applied to an optical splitter in an optical network system, and the optical network system includes at least one optical splitter and each optical splitter is directly connected At least two optical network units ONU, optical splitter performance abnormal detection device 30 includes:

An obtaining module 301, configured to obtain the optical signal strength of the ONU N times within a preset period of time, where N≥2;

The determination module 302 is used to obtain at least two target ONUs whose optical signal strengths continue to decrease for N times in the ONUs of the optical network system, if the difference values of the reduction ranges between the optical signal strengths of the at least two target ONUs are equal to If it is smaller than the first threshold, it is determined that the sub-target optical splitter that is directly connected to the at least two target ONUs is an optical splitter with abnormal performance.

Optionally, the optical splitter in the optical network system further includes at least one parent optical splitter, if the target optical splitter is directly connected to the parent optical splitter, the target optical splitter is a child target optical splitter, and the device also Including: the determination module 302 is further configured to determine the parent of the at least two sub-target optical splitters to which the at least two sub-target optical splitters are commonly connected if the difference values of the reduction amplitudes between the optical signal intensities corresponding to the at least two sub-target optical splitters are both smaller than the second threshold The optical splitter is an abnormal performance optical splitter.

Optionally, the device further includes: a search module 303, configured to search for the target optical splitter connected to the target ONU in the first correspondence between the preset ONU and the connected sub-optical splitter; the determination The module 302 is further configured to determine that the target optical splitter is an optical splitter with abnormal performance if there are at least two target optical splitters directly connected to the target ONU.

Optionally, the optical network system further includes an optical line terminal, and the optical line terminal is connected to at least one optical splitter, and the device further includes: the search module 303, which is also configured to search the preset optical splitter and the connected In the second corresponding relationship of the optical line terminal, search for the port of the optical line terminal connected to the abnormal optical splitter; the determination module 302 is also configured to if there are at least two optical lines directly connected to the abnormal optical splitter For the port of the terminal, if the difference values of the reduction amplitudes between the optical signal intensities corresponding to the at least two abnormal optical splitters are both smaller than the third threshold, then it is determined that the port of the optical line terminal is a port with abnormal performance.

Optionally, as shown in FIG. 6 , the device further includes: an output module 304 configured to output abnormal information, including a target ONU, an abnormal optical splitter, and an abnormal port.

7 is a schematic structural diagram of another optical splitter performance abnormality detection device provided in the embodiment of the present application, including a memory 41, a processor 42, a bus 43, and a communication interface 44; the memory 41 is used to store computer-executable instructions, and the processor 42 and The memory 41 is connected through a bus 43; when the optical splitter performance abnormality detection device is running, the processor 42 executes the computer-executed instructions stored in the memory 41, so that the optical splitter performance abnormality detection device executes the optical splitter performance abnormality detection method as provided in the above-mentioned embodiments .

In a specific implementation, as an embodiment, the processor 42 (42-1 and 42-2) may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 7 . And as an embodiment, the device for detecting abnormal performance of an optical splitter may include multiple processors 42, such as the processor 42-1 and the processor 42-2 shown in FIG. 7 . Each CPU in these processors 42 may be a single-core processor (single-CPU), or a multi-core processor (multi-CPU). Processor 42 herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

The memory 41 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions The dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage ( including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other medium, but not limited to. The memory 41 may exist independently, and is connected to the processor 42 through the bus 43 . The memory 41 can also be integrated with the processor 42 .

In a specific implementation, the memory 41 is used to store the data in this application and the computer-executed instructions corresponding to executing the software program of this application. The processor 42 can run or execute the software program stored in the memory 41 and call the data stored in the memory 41 to perform various functions of the optical splitter performance abnormal detection device.

The communication interface 44 uses any device such as a transceiver for communicating with other devices or communication networks, such as control systems, radio access networks (radio access network, RAN), wireless local area networks (wireless local area networks, WLAN) and so on. The communication interface 44 may include a receiving unit to implement a receiving function, and a sending unit to implement a sending function.

The bus 43 may be an industry standard architecture (industry standard architecture, ISA) bus, a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, etc. The bus 43 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 7 , but it does not mean that there is only one bus or one type of bus.

An embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium includes computer-executable instructions, and when the computer-executable instructions are run on the computer, the computer executes the optical splitter performance abnormality detection method provided in the above-mentioned embodiments.

The embodiment of the present application also provides a computer program, which can be directly loaded into the memory and contains software codes. After the computer program is loaded and executed by the computer, it can implement the optical splitter performance abnormality detection method provided by the above embodiments.

Those skilled in the art should be aware that, in the above one or more examples, the functions described in the present invention may be implemented by hardware, software, firmware or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation. For example a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms. A unit described as a separate component may or may not be physically separated, and a component shown as a unit may be one physical unit or multiple physical units, which may be located in one place or distributed to multiple different places. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. If an integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium Among them, several instructions are included to make a device (which may be a single-chip microcomputer, a chip, etc.) or a processor execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A method for detecting abnormal performance of an optical splitter, wherein the method is applied to an optical splitter in an optical network system, and the optical network system includes at least one optical splitter and at least two optical splitters directly connected to each optical splitter An optical network unit ONU, the method includes: Obtain the optical signal strength of the ONU N times within a preset period of time, where N≥2; In the ONU of the optical network system, at least two target ONUs whose optical signal strengths continue to decrease for N times are obtained, and if the difference values of the reduction ranges between the optical signal strengths of the at least two target ONUs are less than the first threshold, then It is determined that the target optical splitter to which the at least two target ONUs are directly connected is an optical splitter with abnormal performance. 2. The method according to claim 1, wherein the optical splitter in the optical network system further comprises at least one parent optical splitter, and if the target optical splitter is directly connected to the parent optical splitter, the target optical splitter The device is a sub-target optical splitter, and the method also includes: If the reduction range difference values between the optical signal intensities corresponding to the at least two sub-target optical splitters are smaller than the second threshold; It is determined that the parent optical splitter to which the at least two sub-target optical splitters are directly connected is an optical splitter with abnormal performance. 3. The method according to claim 1, wherein the step of determining that the target optical splitter that is directly connected to the at least two target ONUs is an abnormal performance optical splitter comprises: In the first corresponding relationship between the preset ONU and the connected optical splitter, search for the target optical splitter connected to the target ONU; If there are at least two target optical splitters directly connected to the target ONU, it is determined that the target optical splitter is an optical splitter with abnormal performance. 4. The method according to claim 2 or 3, wherein the optical network system further comprises an optical line terminal, and the optical line terminal is connected to at least one optical splitter, and the method further comprises: In the second corresponding relationship between the preset optical splitter and the connected optical line terminal, search for the port of the optical line terminal connected to the abnormal optical splitter; If there are at least two ports of the optical line terminal to which the abnormal optical splitters are directly connected together, and the difference values of the reduction amplitudes between the optical signal intensities corresponding to the at least two abnormal optical splitters are both smaller than the third threshold, then it is determined that the optical The port at the end of the line is a port with abnormal performance. 5. An optical splitter performance abnormal detection device, characterized in that the device is applied to an optical splitter in an optical network system, and the optical network system includes at least one optical splitter and at least two optical splitters directly connected to each optical splitter. An optical network unit ONU, the device includes: An obtaining module, configured to obtain the optical signal strength of the ONU N times within a preset period of time, where N≥2; A judging module, configured to obtain at least two target ONUs whose optical signal strengths continue to decrease for N times in the ONUs of the optical network system, if the difference values of the reduction ranges between the optical signal strengths of the at least two target ONUs are less than The first threshold is to determine that the sub-target optical splitters that are directly connected to the at least two target ONUs are optical splitters with abnormal performance. 6. The device according to claim 5, wherein the optical splitter in the optical network system further comprises at least one parent optical splitter, and if the target optical splitter is directly connected to the parent optical splitter, the target optical splitter The device is a sub-target optical splitter, and the device also includes: The determination module is further configured to determine that the parent optical splitter that is commonly connected to the at least two sub-target optical splitters is Abnormal performance beam splitter. 7. The device of claim 5, further comprising: The search module is used to search for the target optical splitter connected to the target ONU in the first corresponding relationship between the preset ONU and the connected sub-optical splitter; The determining module is further configured to determine that the target optical splitter is an optical splitter with abnormal performance if there are at least two target optical splitters directly connected to the target ONU. 8. The device according to claim 6 or 7, wherein the optical network system further comprises an optical line terminal connected to at least one optical splitter, and the device further comprises: The search module is further configured to search for the port of the optical line terminal connected to the abnormal optical splitter in the second correspondence between the preset optical splitter and the connected optical line terminal; The determination module is further configured to: if there are at least two ports of the optical line terminal to which the abnormal optical splitters are directly connected together, the difference values of reduction ranges between the optical signal intensities corresponding to the at least two abnormal optical splitters are both smaller than the first three thresholds, it is determined that the port of the optical line terminal is a port with abnormal performance. 9. An optical splitter performance abnormal detection device, characterized in that it comprises: memory; and a processor coupled to the memory, the processor configured to execute the method according to any one of claims 1-4 based on instructions stored in the memory. 10. A computer-readable storage medium, on which computer program instructions are stored, wherein the instructions are executed by one or more processors to implement the steps of the method according to any one of claims 1-4.

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