Loss measurement system and method based on power distribution automation PON optical link

Abstract

The application discloses a loss measurement system and method based on a power distribution automation PON optical link, and belongs to the field of PON optical link measurement. The loss measurement system based on the power distribution automation PON optical link comprises a data acquisition module, a data processing module, a loss calculation module, a report generation module and a warning optimization module. The application solves the problem that the prior art cannot accurately measure optical link loss. The application can improve the accuracy of subsequent calculation by processing optical power spectrum data, and then calculates the loss of the PON optical link by using an optical transmission distance calculation method. The calculated loss calculation result and the acquired optical power spectrum data can generate a loss report, so that workers can evaluate, optimize and make decisions according to the loss report. Meanwhile, the loss of the PON optical link is judged according to the loss calculation result, and a warning mechanism is automatically triggered to remind workers to timely check and repair, so that the problem is prevented from being enlarged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PON optical link measurement, in particular to a loss measurement system and method based on a power distribution automation PON optical link. BACKGROUND

[0002] In a power distribution automation system, it is very important to monitor and control the loss of a power line in real time. Although traditional electric energy meters and electric meters can measure the amount of electric energy consumption, they cannot provide real-time power line loss data. Therefore, a method for monitoring and controlling the loss of a power line in real time is needed.

[0003] PON (Passive Optical Network) is a technology widely used in the field of communication, which can connect multiple users by distributing multiple optical splitters. Due to the advantages of long transmission distance, large bandwidth and low cost of PON technology, it has been widely used in power distribution automation systems.

[0004] However, the prior art cannot accurately measure the loss of the optical link, and the loss of the optical link in the PON system will cause the quality of signal transmission to decrease. If these losses cannot be discovered and handled in time, it will affect the normal operation of the entire system. Therefore, the existing needs are not met, and the loss measurement system and method based on the power distribution automation PON optical link are proposed. SUMMARY

[0005] The purpose of the application is to provide a loss measurement system and method based on a power distribution automation PON optical link. By obtaining and processing optical power spectrum data, the accuracy of subsequent calculations can be improved through the processing of optical power spectrum data. Based on the optical power spectrum data, the loss of the PON optical link is calculated using an optical transmission distance calculation method, and then the loss calculation result is obtained. The loss calculation result obtained by calculation and the optical power spectrum data obtained are used to generate a loss report by a report generation module, so that the staff can evaluate, optimize and make decisions through the loss report. At the same time, the loss of the PON optical link can also be judged according to the loss calculation result, and an early warning mechanism is automatically triggered to remind the staff to check and repair in time, avoiding the problem from being enlarged. The problems raised in the above background technology are solved.

[0006] To achieve the above purpose, the application provides the following technical scheme:

[0007] In a first aspect, the application provides a loss measurement system based on a power distribution automation PON optical link, comprising:

[0008] The data acquisition module is configured to periodically collect monitoring data of the monitoring device on the PON optical link, acquire optical power spectrum data, and store the optical power spectrum data in a database, wherein the optical power spectrum data is used to describe the optical power distribution and change of the light during the transmission of the light in the optical fiber.

[0009] The data processing module is configured to retrieve the acquired optical power spectrum data from the database for processing, including de-meaning, de-trending, and interpolation.

[0010] The loss calculation module is configured to analyze the processed optical power spectrum data, and calculate the loss of the PON optical link based on the optical power spectrum data through a loss calculation formula.

[0011] The report generation module is configured to sort the acquired optical power spectrum data and the loss calculation result, and generate a loss report.

[0012] The early warning optimization module is configured to determine the loss of the PON optical link according to the loss calculation result, and automatically trigger an early warning mechanism to remind the staff to timely check and repair.

[0013] Further, the data acquisition module comprises:

[0014] The data monitoring module is a monitoring device arranged at a monitoring point of the PON optical link, and is configured to monitor the optical signal in real time, wherein the monitoring point is the entrance and exit of the PON optical link.

[0015] The data collection module is configured to set a collection time in advance, and periodically collect the monitoring data of the monitoring device according to the set collection time to acquire the optical power spectrum data.

[0016] The data storage module is configured to store the acquired optical power spectrum data, and the stored optical power spectrum data is used for subsequent processing by the data processing module.

[0017] Further, the monitoring device comprises an optical power meter and an optical spectrum analyzer, the optical power meter is configured to measure the intensity of the optical signal, and the optical spectrum analyzer is configured to analyze the wavelength and intensity distribution of the optical signal, and specifically comprises the following steps:

[0018] The optical signal measured by the optical power meter is converted into an electrical signal after photoelectric conversion;

[0019] The electrical signal is converted into a digital signal by an analog-to-digital converter, and the digital signal is transmitted to the optical spectrum analyzer;

[0020] The optical spectrum analyzer obtains the optical power spectrum data by analyzing the wavelength and intensity of the optical signal.

[0021] The optical power spectrum data reflects the loss of the light in the optical fiber, including the attenuation and absorption loss of the optical power.

[0022] Further, the data processing module, specifically:

[0023] De-meaning: For optical power spectrum data with high noise, de-meaning processing is performed, the average value of each optical power spectrum data is calculated, and then the average value is replaced with the original data to reduce the noise level of the optical power spectrum data.

[0024] Detrending: For optical power spectrum data with obvious trend, a moving average method is used to remove the trend of the optical power spectrum data.

[0025] Interpolation: In the optical power spectrum data, linear interpolation is used to fill in the missing data points in the optical power spectrum data.

[0026] Further, in the loss calculation module, the loss of the PON optical link is calculated by a loss calculation formula, specifically including the following steps:

[0027] Determine the optical transmission distance: According to the optical power spectrum data, the type of PON optical link and the specification of optical fiber, the transmission distance of optical signal on the PON optical link is determined.

[0028] Determine the optical transmission constant: Determine the optical transmission constant by querying the data of the PON optical link.

[0029] Calculate the optical power attenuation: According to the optical transmission distance and the optical transmission constant, the optical power attenuation of the optical signal on the PON optical link is calculated using the optical transmission distance calculation method.

[0030] Calculate the optical signal transmission distance: According to the optical power attenuation and the optical transmission constant, the transmission distance of the optical signal on the PON optical link is calculated using the optical signal transmission distance calculation method.

[0031] Calculate the optical link loss: Calculate the loss of the optical link by the optical power attenuation and the optical signal transmission distance using the optical link loss formula, wherein the optical link loss formula includes the cosine attenuation method and the exponential attenuation method.

[0032] Wherein, the optical transmission distance calculation method includes fixed matrix method, minimum optical path method and short path method.

[0033] Further, the report generation module specifically includes the following steps:

[0034] Import the optical power spectrum data and the loss calculation result into the report generation module, integrate the optical power spectrum data and the loss calculation result into a report, and generate a loss report.

[0035] Visualize the loss report.

[0036] Further, the early warning optimization module includes:

[0037] The early warning module is configured to analyze the loss calculation result, find the loss abnormality of the PON optical link, and automatically trigger the early warning mechanism.

[0038] The optimization module is configured to remind the staff to timely check and repair according to the triggered early warning mechanism, and adjust the optical signal in the PON optical link according to the calculated loss calculation result, including adjusting the output power of the light source and changing the parameters of the optical multiplexer.

[0039] Further, the early warning optimization module further comprises:

[0040] The first running parameter calling module is configured to call the running parameters of the PON optical link when the PON optical link has no loss abnormality, wherein the running parameters of the PON optical link include the output power of the light source, the optical multiplexer insertion loss of the PON optical link, the fiber attenuation coefficient, and the passive device loss.

[0041] The loss running evaluation coefficient acquisition module is configured to acquire the loss running evaluation coefficient by using the optical multiplexer insertion loss and the passive device loss of the PON optical link.

[0042] The loss running evaluation coefficient is acquired by the following formula:

[0043]

[0044] Wherein, W represents the loss running evaluation coefficient; n represents the number of unit time experienced by the PON optical link, and the unit time is 1s; P ci represents the optical multiplexer insertion loss corresponding to the ith unit time; P wi represents the passive device loss corresponding to the ith unit time; P zi represents the total loss corresponding to the ith unit time; P wmaxi represents the maximum value of the passive device loss appearing in the ith unit time; P cmaxi represents the maximum value of the optical multiplexer insertion loss appearing in the ith unit time.

[0045] The loss coefficient comparison module is configured to compare the loss running evaluation coefficient with the preset loss running coefficient threshold.

[0046] The risk early warning module is configured to call the output power of the light source and the fiber attenuation coefficient to perform the running risk early warning on the PON optical link when the loss running evaluation coefficient is lower than the preset loss running coefficient threshold.

[0047] Further, the risk early warning module comprises:

[0048] The second operation parameter calling module is used for calling the light source output power and the optical fiber attenuation coefficient when the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold value.

[0049] The operation risk coefficient acquisition module is used for acquiring the operation risk coefficient by combining the light source output power and the optical fiber attenuation coefficient with the loss operation evaluation coefficient.

[0050] The operation risk coefficient is acquired by the following formula:

[0051]

[0052] Wherein, F represents the operation risk coefficient; P si represents the light source output power corresponding to the ith unit time; P se represents the preset light source output power standard value; P zi represents the total loss corresponding to the ith unit time; P ze represents the preset maximum allowable value of the total loss; s represents the optical fiber attenuation coefficient; W represents the loss operation evaluation coefficient; W y represents the preset loss operation coefficient threshold value; P zmax represents the maximum value of the total loss generated in the actual operation process;

[0053] The risk coefficient comparison module is used for comparing the operation risk coefficient with the preset risk coefficient threshold value.

[0054] The abnormal risk determination and early warning module is used for determining that the PON optical link has an operation abnormal risk and performing abnormal risk early warning when the operation risk coefficient exceeds the preset risk coefficient threshold value.

[0055] In the second aspect, the application provides a loss measurement method based on a power distribution automation PON optical link, which is applied to the loss measurement system based on the power distribution automation PON optical link and includes the following steps.

[0056] Step 1: a monitoring device is arranged on the PON optical link, optical power spectrum data is acquired by periodically collecting monitoring data of the monitoring device, and the optical power spectrum data is stored in a database;

[0057] Step 2: the acquired optical power spectrum data is subjected to mean removal, trend removal and interpolation processing;

[0058] Step 3: on the basis of the processed optical power spectrum data, the loss of the PON optical link is calculated by a loss calculation formula, and a loss calculation result is obtained;

[0059] Step 4: the acquired optical power spectrum data and the loss calculation result are arranged, and a loss report is generated;

[0060] Step 5: According to the loss calculation result, the loss of the PON optical link is judged, and the early warning mechanism is automatically triggered to remind the staff to check and repair in time, and then the PON optical link is optimized.

[0061] Compared with the prior art, the beneficial effects of the present application are:

[0062] The data acquisition module can obtain optical power spectrum data, and the accuracy of subsequent calculation can be improved by performing mean removal, trend removal and interpolation on the obtained optical power spectrum data, the loss of the PON optical link is calculated based on the optical power spectrum data and by using the optical transmission distance calculation method, and then the loss calculation result is obtained, so as to measure the loss of the PON optical link, and the loss report is generated by the report generation module based on the loss calculation result and the obtained optical power spectrum data, so that the staff can evaluate, optimize and make decisions through the loss report, and at the same time, the loss of the PON optical link can be judged according to the loss calculation result, and the early warning mechanism is automatically triggered to remind the staff to check and repair in time, and the optical signal in the PON optical link is adjusted, so that the PON optical link can be optimized to avoid the problem from being enlarged. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 It is a structural schematic diagram of the loss measurement system of the PON optical link based on power distribution automation of the present application. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0065] In order to solve the technical problem that the prior art cannot accurately measure the loss of the optical link, and the loss of the optical link in the PON system will cause the quality of signal transmission to decrease, if the loss cannot be found and processed in time, the normal operation of the entire system will be affected, please refer to Figure 1 The technical solutions of the present embodiment are as follows:

[0066] The loss measurement system of the PON optical link based on power distribution automation comprises:

[0067] The data acquisition module is used for: setting a monitoring device on the PON optical link, obtaining optical power spectrum data by periodically collecting monitoring data of the monitoring device and storing the optical power spectrum data into a database, wherein the optical power spectrum data is used to describe the optical power distribution and change of the optical transmission in the optical fiber.

[0068] The data processing module is configured to process the acquired optical power spectrum data by de-meaning, de-trending and interpolation from the database;

[0069] The loss calculation module is configured to analyze the processed optical power spectrum data and calculate the loss of the PON optical link based on the optical power spectrum data by using a loss calculation formula, wherein the loss calculation formula is an optical transmission distance calculation method, and the optical transmission distance calculation method includes a fixed matrix method, a minimum optical path method and a short path method;

[0070] The report generation module is configured to sort the acquired optical power spectrum data and the loss calculation result and generate a loss report;

[0071] The early warning optimization module is configured to determine the loss of the PON optical link according to the loss calculation result and automatically trigger an early warning mechanism to remind the staff to timely check and repair.

[0072] The technical effects of the above content are as follows: the optical power spectrum data can be acquired by the data acquisition module, the accuracy of subsequent calculation can be improved by de-meaning, de-trending and interpolation of the acquired optical power spectrum data, then the loss calculation module can calculate the loss of the PON optical link by using the optical transmission distance calculation method, and the loss calculation result is obtained, so as to measure the loss of the PON optical link, the loss report is generated by the report generation module based on the loss calculation result and the acquired optical power spectrum data, so that the staff can evaluate, optimize and make decisions based on the loss report, at the same time, the early warning optimization module can determine the loss of the PON optical link according to the loss calculation result and automatically trigger the early warning mechanism to remind the staff to timely check and repair, and adjust the optical signal in the PON optical link, so as to optimize the PON optical link to reduce the loss and improve the service life of the optical cable.

[0073] The data acquisition module comprises:

[0074] The data monitoring module is configured to determine the monitoring points of the PON optical link and set monitoring devices on the determined monitoring points to monitor the optical signal in real time by the set monitoring devices, wherein the monitoring points are the entrance and exit of the PON optical link;

[0075] The data collection module is configured to set the collection time in advance and collect the monitoring data of the monitoring devices periodically according to the set collection time to acquire the optical power spectrum data, wherein the collection time is daily, hourly or minute;

[0076] A data storage module is configured to store the obtained optical power spectrum data, and the stored optical power spectrum data is used for subsequent processing by the data processing module.

[0077] The technical effects of the above are that the data monitoring module is responsible for determining the monitoring points of the PON optical link, such as the inlet and outlet, and setting corresponding monitoring devices at these monitoring points to monitor the optical signal in real time, the data collection module automatically collects the monitoring data of the monitoring devices according to a preset time period (such as daily, hourly, or minute), thereby obtaining the optical power spectrum data, and finally, the data storage module permanently stores the collected optical power spectrum data to facilitate subsequent processing by the data processing module.

[0078] The monitoring device includes an optical power meter and an optical spectrum analyzer, the optical power meter is used to measure the intensity of the optical signal, and the optical spectrum analyzer is used to analyze the wavelength and intensity distribution of the optical signal, and specifically includes the following processes:

[0079] The optical signal measured by the optical power meter is converted into an electrical signal after photoelectric conversion;

[0080] The electrical signal is converted into a digital signal by an analog-to-digital converter, and the digital signal is transmitted to the optical spectrum analyzer for further processing;

[0081] The optical spectrum analyzer obtains the optical power spectrum data by analyzing the wavelength and intensity of the optical signal;

[0082] The optical power spectrum data reflects the loss of light in the optical fiber, including the attenuation and absorption loss of optical power.

[0083] The technical effects of the above are that the optical power meter is mainly used to measure the intensity of the optical signal, that is, the optical power, which can be obtained by photoelectric conversion of the optical signal, thereby directly obtaining the intensity information of the optical signal, and the optical spectrum analyzer is a tool for analyzing the wavelength and intensity distribution of the optical signal. After photoelectric conversion, the generated electrons excite the built-in detector array of the optical spectrum analyzer, and a series of different wavelength light signals can be obtained, and the optical spectrum analyzer processes these signals, such as calculating the numerical value of the intensity of each wavelength, thereby obtaining the optical power spectrum data. The obtained optical power spectrum data contains all information of the light in the optical fiber, including the attenuation and absorption loss of the optical power.

[0084] The data processing module specifically includes:

[0085] De-meaning: The optical power spectrum data with high noise is de-meaned by calculating the average value of each optical power spectrum data, and then the average value is replaced by the original data, thereby reducing the noise level of the optical power spectrum data;

[0086] De-trending: for optical power spectrum data with obvious trend, using one or more moving average method to remove the trend of optical power spectrum data;

[0087] Interpolation: in optical power spectrum data, the data point is a value corresponding to a specific wavelength position in the spectrum diagram, using linear interpolation to fill in the missing data points in the optical power spectrum data.

[0088] The technical effects of the above are: de-meaning can effectively eliminate noise by calculating the average value of each optical power spectrum data and replacing it with the original data, which can better understand the optical power spectrum data, de-trending can eliminate the trend of optical power spectrum data by using some methods to remove the heat of optical power spectrum data, such as one or more moving average method, and interpolation uses linear interpolation to fill in the missing data points, so as to effectively fill in the blank of data points, making the optical power spectrum data more complete and coherent, through de-meaning, de-trending and interpolation of optical power spectrum data, the optical power spectrum data can be better understood, so as to improve the accuracy of subsequent calculation.

[0089] In the loss calculation module, the loss of the PON optical link is calculated by a loss calculation formula, which includes the following processes:

[0090] Determining the optical transmission distance: according to the optical power spectrum data and the type and fiber specification of the PON optical link, the transmission distance of the optical signal on the PON optical link is determined, wherein the optical power attenuation information in the optical power spectrum data is used to calculate the distance of the optical signal in the optical fiber, combined with the optical propagation speed in the optical fiber and the loss coefficient of the optical signal in the optical fiber.

[0091] Determining the optical transmission constant: the optical transmission constant is determined by querying the data of the PON optical link, which is a set of parameters of the transmission characteristics of the optical signal in the optical fiber.

[0092] Calculating the optical power attenuation: according to the optical transmission distance and the optical transmission constant, the optical power attenuation of the optical signal on the PON optical link is calculated using the optical transmission distance calculation method.

[0093] Calculating the optical signal transmission distance: according to the optical power attenuation and the optical transmission constant, the transmission distance of the optical signal on the PON optical link is calculated using the optical signal transmission distance calculation method.

[0094] Calculating the optical link loss: the loss of the optical link is calculated by the optical power attenuation and the optical signal transmission distance using the optical link loss formula, wherein the optical link loss formula includes the cosine attenuation method and the exponential attenuation method.

[0095] The technical effects of the above are: first, by analyzing the optical power spectrum data and PON type, fiber specification and other information, the transmission distance of the optical signal on the PON optical link can be accurately calculated, which provides an important basis for subsequent optical power attenuation calculation, second, according to the known transmission distance and optical transmission constant, the optical power attenuation of the optical signal on the PON optical link can be calculated, and finally, the transmission distance of the optical signal on the PON optical link can be calculated by combining the optical power attenuation and the optical transmission constant. Through the calculation of the optical power attenuation and the optical signal transmission distance, the optical link loss is calculated further by using the optical link loss formula, including the cosine attenuation method and the exponential attenuation method, and the loss calculation result can provide a reference for optimizing the performance of the PON optical link, so as to realize more efficient and stable optical transmission.

[0096] The report generation module specifically includes the following processes:

[0097] The optical power spectrum data and the loss calculation result are imported into the report generation module;

[0098] The optical power spectrum data is visually processed, such as drawing a spectrum graph and a power distribution graph;

[0099] According to the optical power spectrum data and the loss calculation result, a loss report is generated;

[0100] The report generation module also provides an export function, which is used for the staff to download and print the loss report. The export function can use common file formats (such as PDF, Excel, CSV, etc.), allowing users to select appropriate export options as needed.

[0101] The technical effects of the above are: the optical power spectrum data and the loss calculation result are imported into the report generation module, and the optical power spectrum data and the loss calculation result are integrated into a report by the report generation module, thereby generating a loss report, and providing an export function to facilitate the staff to download and print, so that the staff can evaluate, optimize and make decisions through the loss report.

[0102] The early warning optimization module includes:

[0103] The early warning module is used to analyze the loss calculation result to find the loss abnormality of the PON optical link, and then automatically trigger the early warning mechanism, wherein:

[0104] The statistical analysis method is used to analyze the loss calculation result;

[0105] The threshold is set in advance, and the set threshold is applied to the actual loss calculation result;

[0106] It is judged whether the loss calculation result exceeds the set threshold.

[0107] If the set threshold is exceeded, the PON optical link appears a loss abnormal situation;

[0108] The optimization module is configured to remind the staff to check and repair in time according to the triggered early warning mechanism, and to adjust the optical signal in the PON optical link according to the calculated loss calculation result, including adjusting the output power of the light source and changing the parameters of the optical multiplexer.

[0109] The technical effects of the above are that the early warning module is responsible for real-time monitoring of the loss calculation result, and once a problem is found, the early warning mechanism is automatically triggered to remind the staff to pay attention, and the optimization module is responsible for reminding the staff to check and repair the optical signal in the PON optical link in time and adjusting the optical signal in the PON optical link according to the information triggered by the early warning mechanism and the loss calculation result, including adjusting the output power of the light source and changing the parameters of the optical multiplexer, so as to optimize the PON optical link and avoid the problem from being enlarged.

[0110] Specifically, the early warning optimization module further comprises:

[0111] The first running parameter calling module is configured to call the running parameters of the PON optical link when the PON optical link has no loss abnormal situation, wherein the running parameters of the PON optical link include the output power of the light source, the optical multiplexer insertion loss of the PON optical link, the fiber attenuation coefficient, and the passive device loss;

[0112] The loss running evaluation coefficient acquisition module is configured to acquire the loss running evaluation coefficient by using the optical multiplexer insertion loss and the passive device loss of the PON optical link;

[0113] The loss running evaluation coefficient is acquired by the following formula:

[0114]

[0115] Wherein, W represents the loss running evaluation coefficient; n represents the number of unit times experienced by the PON optical link running, and the unit time is 1s; P ci represents the optical multiplexer insertion loss corresponding to the ith unit time; P wi represents the passive device loss corresponding to the ith unit time; P zi represents the total loss corresponding to the ith unit time; P wmaxi represents the maximum value of the passive device loss appearing in the ith unit time; P cmaxi represents the maximum value of the optical multiplexer insertion loss appearing in the ith unit time;

[0116] a loss coefficient comparison module configured to compare the loss operation evaluation coefficient with a preset loss operation coefficient threshold value;

[0117] a risk early warning module configured to, when the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold value, call the optical source output power and the optical fiber attenuation coefficient to perform operation risk early warning on the PON optical link.

[0118] The technical effects of the above technical solution are as follows: through the first operation parameter calling module, the technical solution can call and monitor key operation parameters such as the optical source output power, the optical add / drop multiplexer insertion loss, the optical fiber attenuation coefficient, and the passive device loss in real time when the PON optical link has no loss abnormality. The risk early warning module can timely issue an operation risk early warning when the loss operation evaluation coefficient is lower than the preset threshold value, thereby allowing the network administrator or the automatic system to timely take measures to avoid potential optical link failures. The loss operation evaluation coefficient acquisition module dynamically calculates the loss operation evaluation coefficient by using the optical add / drop multiplexer insertion loss and the passive device loss of the PON optical link through a specific formula. This coefficient not only considers the current loss value but also considers the loss variation range (maximum value and minimum value), thereby providing a more comprehensive loss condition evaluation. Through real-time monitoring and early warning and risk assessment based on the loss operation evaluation coefficient, the technical solution helps to identify and solve problems that may cause PON optical link failures in advance. This helps to reduce network interruptions and improve the stability and reliability of the network, thereby ensuring the service quality and experience of users. The technical solution realizes intelligent monitoring and early warning of the PON optical link loss through modular design. The collaborative work between the modules makes the entire early warning optimization process more automated and efficient. The technical solution can adjust the preset loss operation coefficient threshold value according to actual needs to adapt to different network environments and application scenarios. At the same time, the technical solution can be further extended to include more monitoring parameters and early warning mechanisms, thereby more comprehensively guaranteeing the normal operation of the PON optical link.

[0119] In summary, the technical solution effectively improves the stability and reliability of the PON optical link, reduces the risk of network failures, and provides better service quality for users through real-time monitoring, dynamic evaluation, early warning, and intelligent processing.

[0120] Specifically, the risk early warning module includes:

[0121] a second operation parameter calling module configured to, when the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold value, call the optical source output power and the optical fiber attenuation coefficient;

[0122] an operation risk coefficient acquisition module configured to acquire an operation risk coefficient by combining the optical source output power and the optical fiber attenuation coefficient with the loss operation evaluation coefficient.

[0123] wherein the operation risk coefficient is obtained by the following formula:

[0124]

[0125] wherein F represents the operation risk coefficient; n represents the number of unit time experienced by the PON optical link operation, and the unit time is 1s; P si represents the optical source output power corresponding to the ith unit time; P se represents the preset optical source output power standard value; P zi represents the total loss corresponding to the ith unit time; P ze represents the preset maximum allowable value of the total loss; s represents the fiber attenuation coefficient; W represents the loss operation evaluation coefficient; W y represents the preset loss operation coefficient threshold; P zmax represents the maximum value of the total loss generated in the actual operation process;

[0126] a risk coefficient comparison module, configured to compare the operation risk coefficient with a preset risk coefficient threshold;

[0127] an abnormal risk determination and early warning module, configured to determine that the PON optical link has an operation abnormal risk and perform abnormal risk early warning when the operation risk coefficient exceeds the preset risk coefficient threshold.

[0128] The technical effects of the above technical solution are: the risk early warning module comprehensively considers multiple parameters such as light source output power, fiber attenuation coefficient and loss operation evaluation coefficient, and calculates the operation risk coefficient using a specific formula. This way can more comprehensively reflect the operation state of the PON optical link, thereby providing more accurate risk assessment. When the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold, the module automatically retrieves key parameters such as light source output power and fiber attenuation coefficient, and performs real-time calculation and analysis. This real-time and dynamic nature enables the system to quickly respond to changes in the PON optical link and promptly issue warnings. By comparing the calculated operation risk coefficient with the preset risk coefficient threshold, the module can accurately determine whether the PON optical link has an abnormal operation risk and issue an abnormal risk warning. This accurate warning mechanism helps reduce false positives and false negatives, improving the reliability and accuracy of the system. The technical solution can timely discover and solve potential problems in the PON optical link through real-time monitoring and early warning, thereby avoiding network interruptions and failures. This helps improve the stability and reliability of the network and ensures the service quality and experience of users. The entire risk early warning module design embodies intelligent and automated features. The module can automatically perform tasks such as parameter retrieval, calculation and analysis, and warning determination without human intervention. This reduces operational costs and improves work efficiency. The technical solution has certain flexibility and scalability. The preset loss operation coefficient threshold, risk coefficient threshold and other parameters can be adjusted and optimized according to actual conditions. At the same time, the module can be further expanded to include more monitoring parameters and warning mechanisms, thereby more comprehensively ensuring the normal operation of the PON optical link.

[0129] In summary, the technical solution effectively improves the risk early warning capability of the PON optical link through comprehensive risk assessment, real-time and dynamic nature, accurate warning and determination, improved network stability and reliability, intelligent and automated features, and flexibility and scalability, thereby providing strong support for stable network operation.

[0130] Specifically, the embodiment also proposes an implementation method of a loss measurement system based on a power distribution automation PON optical link, including the following steps:

[0131] The data acquisition module acquires optical power spectrum data by periodically collecting monitoring data of the monitoring device;

[0132] The data processing module performs mean removal, trend removal and interpolation processing on the acquired optical power spectrum data, and the processed optical power spectrum data is used for subsequent loss calculation work;

[0133] The processed optical power spectrum data is calculated by a loss calculation module, the loss calculation module calculates the loss of the PON optical link by using an optical transmission distance calculation method, and then obtains a loss calculation result;

[0134] The calculated loss calculation result and the obtained optical power spectrum data are integrated into a loss report by a report generation module, and a worker can evaluate, optimize and make decisions by downloading and printing the loss report to understand the loss of the PON optical link.

[0135] Meanwhile, the warning optimization module judges the loss of the PON optical link according to the loss calculation result, and automatically triggers a warning mechanism to remind the worker to check and repair in time, and then optimizes the PON optical link.

[0136] The optical power spectrum data can be obtained by the data acquisition module, the obtained optical power spectrum data can be processed by de-meaning, de-trending and interpolation, the optical power spectrum data can be better understood, and the accuracy of subsequent calculation can be improved, then the loss calculation module can calculate the loss of the PON optical link by using the optical transmission distance calculation method to measure the loss of the PON optical link, and the calculated loss calculation result and the obtained optical power spectrum data are integrated into the loss report by the report generation module, so that the worker can evaluate, optimize and make decisions by the loss report, and the loss of the PON optical link can be judged according to the loss calculation result, once a problem is found, the warning mechanism is automatically triggered to remind the worker to check and repair in time, and the optical signal in the PON optical link is adjusted to reduce the loss and avoid the problem from being enlarged.

[0137] It should be noted that, in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0138] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. A loss measurement system based on power over network (PON) optical link, characterized in that, The application relates to a PON optical link loss monitoring method and device. The application comprises: a data acquisition module for periodically collecting monitoring data of a monitoring device on a PON optical link, acquiring optical power spectrum data and storing the optical power spectrum data into a database, wherein the optical power spectrum data are used for describing the optical power distribution and change of light in the process of transmission in an optical fiber; a data processing module for processing the acquired optical power spectrum data from the database, including de-meaning, de-trending and interpolation; a loss calculation module for analyzing the processed optical power spectrum data, and calculating the loss of the PON optical link through a loss calculation formula on the basis of the optical power spectrum data; a report generation module for arranging the acquired optical power spectrum data and the loss calculation result to generate a loss report; an early warning optimization module for judging the loss condition of the PON optical link according to the loss calculation result, and automatically triggering an early warning mechanism to remind workers to timely check and repair; the early warning optimization module comprises: an early warning module for analyzing the loss calculation result, finding the loss abnormal condition of the PON optical link, and automatically triggering the early warning mechanism; an optimization module for reminding workers to timely check and repair according to the triggered early warning mechanism, and adjusting the optical signal in the PON optical link according to the calculated loss calculation result, including adjusting the output power of a light source and changing the parameters of an optical multiplexer; a first operating parameter acquisition module for acquiring the operating parameters of the PON optical link when the PON optical link has no loss abnormal condition, wherein the operating parameters of the PON optical link include the output power of the light source, the optical multiplexer insertion loss of the PON optical link, the fiber attenuation coefficient and the passive device loss; a loss operation evaluation coefficient acquisition module for acquiring the loss operation evaluation coefficient by using the optical multiplexer insertion loss and the passive device loss of the PON optical link; Wherein, W represents the loss operation evaluation coefficient; n represents the number of unit time experienced by the PON optical link operation, the unit time is 1s; P ci Represents the optical multiplexer insertion loss corresponding to the ith unit time; P wi Represents the passive device loss corresponding to the ith unit time; P zi Represents the total loss corresponding to the ith unit time; P wmaxi Represents the maximum value of passive device loss corresponding to the ith unit time; P cmaxi Represents the maximum value of optical multiplexer insertion loss corresponding to the ith unit time; the loss operation evaluation coefficient is acquired through the following formula: a loss coefficient comparison module for comparing the loss operation evaluation coefficient with a preset loss operation coefficient threshold value; 2. The power distribution automation PON optical link based loss measurement system according to claim 1, wherein: a risk early warning module for acquiring the output power of the light source and the fiber attenuation coefficient to perform operation risk early warning on the PON optical link when the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold value. The data acquisition module comprises: a data monitoring module, which is a monitoring device arranged at a monitoring point of the PON optical link and is used for monitoring the optical signal in real time, wherein the monitoring point is the entrance and exit of the PON optical link; a data collection module for previously setting a collection time, periodically collecting the monitoring data of the monitoring device according to the set collection time, and acquiring the optical power spectrum data; 3. The power distribution automation PON optical link based loss measurement system according to claim 1, wherein: a data storage module for storing the acquired optical power spectrum data, and the stored optical power spectrum data are used for subsequent processing by the data processing module. The monitoring device comprises an optical power meter and a spectrometer, the optical power meter is used for measuring the intensity of the optical signal, and the spectrometer is used for analyzing the wavelength and intensity distribution of the optical signal, and the method comprises the following steps: the optical signal measured by the optical power meter is converted into an electric signal after photoelectric conversion; an analog-to-digital converter is used to convert the electric signal into a digital signal, and the digital signal is transmitted to the spectrometer; The optical spectrum analyzer obtains optical power spectrum data by analyzing the wavelength and intensity of the optical signal. The optical power spectrum data reflects the loss of the optical signal in the optical fiber, including the attenuation and absorption loss of the optical power.

4. The power distribution automation PON optical link based loss measurement system according to claim 1, wherein: The data processing module specifically comprises: De-meaning: for optical power spectrum data with high noise, de-meaning processing is performed, the average value of each optical power spectrum data is calculated, and then the average value is replaced by the original data to reduce the noise level of the optical power spectrum data; De-trending: for optical power spectrum data with obvious trend, one or more moving average methods are used to remove the trend of the optical power spectrum data; Interpolation: in the optical power spectrum data, linear interpolation is used to fill in the missing data points in the optical power spectrum data.

5. The power distribution automation PON optical link based loss measurement system according to claim 1, wherein: In the loss calculation module, the loss of the PON optical link is calculated by a loss calculation formula, specifically comprising the following steps: Determine the optical transmission distance: according to the optical power spectrum data, the type of the PON optical link and the specification of the optical fiber, determine the transmission distance of the optical signal on the PON optical link; Determine the optical transmission constant: determine the optical transmission constant by querying the data of the PON optical link; Calculate the optical power attenuation: according to the optical transmission distance and the optical transmission constant, calculate the optical power attenuation of the optical signal on the PON optical link using the optical transmission distance calculation method; Calculate the optical signal transmission distance: according to the optical power attenuation and the optical transmission constant, calculate the transmission distance of the optical signal on the PON optical link using the optical signal transmission distance calculation method; Calculate the optical link loss: calculate the loss of the optical link by using the optical power attenuation and the optical signal transmission distance using the optical link loss formula, wherein the optical link loss formula includes the cosine attenuation method and the exponential attenuation method; The optical transmission distance calculation method includes fixed matrix method, minimum optical path method and short path method.

6. The power distribution automation PON optical link based loss measurement system according to claim 1, wherein: The report generation module specifically comprises the following steps: Import the optical power spectrum data and the loss calculation result into the report generation module, integrate the optical power spectrum data and the loss calculation result into a report, and generate a loss report; Visualize the loss report.

7. The power distribution automation PON optical link based loss measurement system according to claim 1, wherein: The risk early warning module comprises: The second running parameter calling module is used to call the light source output power and the optical fiber attenuation coefficient when the loss running evaluation coefficient is lower than the preset loss running coefficient threshold value; The running risk coefficient acquisition module is used to acquire the running risk coefficient by combining the light source output power and the optical fiber attenuation coefficient with the loss running evaluation coefficient; The running risk coefficient is acquired by the following formula: Wherein, F represents the operation risk coefficient; P si represents the light source output power corresponding to the ith unit time; P se represents the preset light source output power standard value; P zi represents the total loss corresponding to the ith unit time; P ze represents the preset total loss maximum allowable value; s represents the optical fiber attenuation coefficient; W represents the loss operation evaluation coefficient; W y represents the preset loss operation coefficient threshold; P zmax represents the maximum value of the total loss generated in the actual operation process; The risk coefficient comparison module is used to compare the running risk coefficient with the preset risk coefficient threshold value; The abnormal risk judgment and early warning module is used to determine that the PON optical link has an abnormal running risk and perform abnormal risk early warning when the running risk coefficient exceeds the preset risk coefficient threshold value.

8. The method for measuring loss of a PON optical link for power distribution automation according to any one of claims 1-7, applied to the system for measuring loss of a PON optical link for power distribution automation according to any one of claims 1-7, characterized in that, The method comprises the following steps: Step 1: set a monitoring device on the PON optical link, acquire optical power spectrum data by regularly collecting monitoring data of the monitoring device, and store the optical power spectrum data in a database; Step 2: perform de-meaning, de-trending and interpolation processing on the acquired optical power spectrum data; Step 3: calculate the loss of the PON optical link by using the optical power spectrum data and the loss calculation formula; Step 3: Based on the processed optical power spectrum data, the loss of the PON optical link is calculated through the loss calculation formula, and the loss calculation result is obtained; Step 4: The obtained optical power spectrum data and loss calculation result are sorted to generate a loss report; Step 5: According to the loss calculation result, the loss situation of the PON optical link is judged, and the early warning mechanism is automatically triggered to remind the staff to check and repair in time, and then the PON optical link is optimized.

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