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

Abstract

The invention 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 distribution automation PON optical link comprises a data acquisition module, a data processing module, a loss calculation module, a report generation module and an early warning optimization module. The problem that the optical link loss cannot be accurately measured in the prior art is solved, the accuracy of subsequent calculation can be improved by processing the optical power spectrum data, the loss of the PON optical link is calculated by using an optical transmission distance calculation method, the loss calculation result obtained through calculation and the obtained optical power spectrum data can generate a loss report, and the loss report can be used for accurately measuring the loss of the PON optical link. According to the method, the loss report is calculated, so that a worker can carry out loss evaluation, optimization and decision making through the loss report, meanwhile, the loss condition of the PON optical link is judged according to a loss calculation result, an early warning mechanism is automatically triggered, the worker is reminded to carry out inspection and maintenance in time, and problem expansion is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of PON optical link measurement, and in particular to a loss measurement system and method based on a distribution automation PON optical link. Background Art

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

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

[0004] However, the existing technology cannot accurately measure the loss of optical links. When optical links in the PON system are lost, the quality of signal transmission will be reduced. If these losses cannot be discovered and processed in time, the normal operation of the entire system will be affected. Therefore, it does not meet the existing needs. We propose a loss measurement system and method based on the distribution automation PON optical link. Summary of the invention

[0005] The purpose of the present invention is to provide a loss measurement system and method based on a PON optical link of power distribution automation. By acquiring and processing optical power spectrum data, the accuracy of subsequent calculations can be improved by processing the optical power spectrum data. The loss of the PON optical link is calculated based on the optical power spectrum data and the optical transmission distance calculation method is used to obtain a loss calculation result. The calculated loss calculation result and the acquired optical power spectrum data are used to generate a loss report through a report generation module, so that the staff can evaluate, optimize and make decisions on the loss through the loss report. At the same time, the loss situation of the PON optical link can be judged according to the loss calculation result, and an early warning mechanism can be automatically triggered to remind the staff to conduct inspections and repairs in time to avoid the expansion of the problem, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

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

[0008] A data acquisition module is used to regularly collect monitoring data of monitoring equipment on the PON optical link, obtain optical power spectrum data and store it in a database, wherein the optical power spectrum data is used to describe the distribution and change of optical power during the transmission of light in the optical fiber;

[0009] A data processing module, used for retrieving the acquired optical power spectrum data from the database for processing, including de-averaging, de-trending and interpolation;

[0010] A loss calculation module is used to analyze the processed optical power spectrum data and calculate the loss of the PON optical link through a loss calculation formula based on the optical power spectrum data;

[0011] The report generation module is used to organize the acquired optical power spectrum data and loss calculation results to generate a loss report;

[0012] The early warning optimization module is used to determine the loss of the PON optical link based on the loss calculation results, and automatically trigger the early warning mechanism to remind the staff to conduct inspections and repairs in a timely manner.

[0013] Furthermore, the data acquisition module includes:

[0014] A data monitoring module is a monitoring device provided at a monitoring point of a PON optical link, and is used to monitor optical signals in real time, wherein the monitoring point is an entrance and an exit of the PON optical link;

[0015] The data collection module is used to set the collection time in advance, collect the monitoring data of the monitoring equipment regularly according to the set collection time, and obtain the optical power spectrum data;

[0016] The data storage module is used 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] Furthermore, the monitoring device includes an optical power meter and a spectrometer, the optical power meter is used to measure the intensity of the optical signal, and the spectrometer is used to analyze the wavelength and intensity distribution of the optical signal, and specifically includes 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 using an analog-to-digital converter, and the digital signal is transmitted to a spectrometer;

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

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

[0022] Furthermore, the data processing module is specifically:

[0023] De-averaging: De-averaging is performed on optical power spectrum data with large noise. The average value of each optical power spectrum data is calculated and then 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 trends, use one or more moving average methods to remove the trends 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] Furthermore, in the loss calculation module, the loss of the PON optical link is calculated by a loss calculation formula, which specifically includes the following steps:

[0027] Determine the optical transmission distance: Determine the transmission distance of the optical signal on the PON optical link based on the optical power spectrum data and the type and fiber specifications of the PON optical link;

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

[0029] Calculate optical power attenuation: Based on the optical transmission distance and the optical transmission constant, use the optical transmission distance calculation method to calculate the optical power attenuation of the optical signal on the PON optical link;

[0030] Calculate the optical signal transmission distance: Based on the optical power attenuation and the optical transmission constant, use the optical signal transmission distance calculation method to calculate the transmission distance of the optical signal on the PON optical link;

[0031] Calculate the optical link loss: Calculate the optical link loss using the optical link loss formula based on the optical power attenuation and the optical signal transmission distance. The optical link loss formula includes the cosine attenuation method and the exponential attenuation method.

[0032] Among them, the optical transmission distance calculation methods include fixed matrix method, minimum optical path method and short path method.

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

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

[0035] Visualize loss reports.

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

[0037] The early warning module is used to analyze the loss calculation results, find out the abnormal loss of the PON optical link, and automatically trigger the early warning mechanism;

[0038] The optimization module is used to remind the staff to conduct timely inspection and maintenance according to the triggered early warning mechanism. At the same time, the optical signal in the PON optical link is adjusted according to the calculated loss calculation results, including adjusting the output power of the light source and changing the parameters of the optical division multiplexer.

[0039] Furthermore, the early warning optimization module also includes:

[0040] A first operating parameter retrieving module is used to retrieve operating parameters of the PON optical link when there is no loss abnormality in the PON optical link, wherein the operating parameters of the PON optical link include light source output power, optical division multiplexer insertion loss of the PON optical link, optical fiber attenuation coefficient, and passive device loss;

[0041] A loss operation evaluation coefficient acquisition module is used to obtain a loss operation evaluation coefficient using an optical division multiplexer insertion loss and a passive device loss of a PON optical link;

[0042] The loss operation evaluation coefficient is obtained by the following formula:

[0043]

[0044] Where W represents the loss operation evaluation coefficient; n represents the number of unit times experienced by the PON optical link operation, and the unit time is 1s; P ci represents the insertion loss of the optical division multiplexer corresponding to the i-th unit time; P wi represents the passive device loss corresponding to the i-th unit time; P zi represents the total loss corresponding to the i-th unit time; P wmaxi represents the maximum value of passive device loss corresponding to the i-th unit time; P cmaxi It represents the maximum insertion loss of the optical division multiplexer corresponding to the i-th unit time;

[0045] A loss coefficient comparison module, used to compare the loss operation evaluation coefficient with a preset loss operation coefficient threshold;

[0046] The risk warning module is used to call the light source output power and optical fiber attenuation coefficient to issue an operation risk warning for the PON optical link when the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold.

[0047] Furthermore, the risk warning module includes:

[0048] A second operation parameter retrieving module, used for retrieving the light source output power and the optical fiber attenuation coefficient when the loss operation evaluation coefficient is lower than a preset loss operation coefficient threshold;

[0049] An operation risk coefficient acquisition module is used to obtain an operation risk coefficient by using the light source output power and the optical fiber attenuation coefficient in combination with the loss operation evaluation coefficient;

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

[0051]

[0052] Where F represents the operational risk factor; P si represents the light source output power corresponding to the i-th unit time; P se Indicates the preset standard value of light source output power; P zi represents the total loss corresponding to the i-th unit time; P ze represents the preset maximum allowable value of total loss; s represents the optical fiber attenuation coefficient; W represents the loss operation evaluation coefficient; W y Indicates the preset loss operation coefficient threshold; P zmax Indicates the maximum total loss generated during actual operation;

[0053] A risk factor comparison module is used to compare the operation risk factor with a preset risk factor threshold;

[0054] The abnormal risk determination and early warning module is used to determine that the PON optical link has an abnormal operation risk and issue an abnormal risk early warning when the operation risk coefficient exceeds a preset risk coefficient threshold.

[0055] In a second aspect, the present invention provides a loss measurement method based on a distribution automation PON optical link, which is applied to the loss measurement system based on a distribution automation PON optical link, and comprises the following steps:

[0056] Step 1: Set up a monitoring device on the PON optical link, obtain the optical power spectrum data by regularly collecting the monitoring data of the monitoring device and store it in the database;

[0057] Step 2: De-averaging, de-trending and interpolation processing are performed on the acquired optical power spectrum data;

[0058] Step 3: Based on the processed optical power spectrum data, the loss of the PON optical link is calculated using a loss calculation formula to obtain a loss calculation result;

[0059] Step 4: Arrange the acquired optical power spectrum data and loss calculation results to generate a loss report;

[0060] Step 5: Determine the loss of the PON optical link based on the loss calculation result, and automatically trigger the early warning mechanism to remind the staff to conduct inspection and maintenance in time, thereby optimizing the PON optical link.

[0061] Compared with the prior art, the present invention has the following beneficial effects:

[0062] The present invention can obtain optical power spectrum data through a data acquisition module, and can improve the accuracy of subsequent calculations by performing de-averaging, de-trending and interpolation processing on the obtained 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 a loss calculation result is obtained, so as to achieve the purpose of measuring the loss of the PON optical link. The calculated loss calculation result and the obtained optical power spectrum data are used to generate a loss report through a report generation module, so that the staff can perform loss evaluation, optimization and decision-making through the loss report. At the same time, the loss situation of the PON optical link can be judged according to the loss calculation result, and an early warning mechanism can be automatically triggered to remind the staff to conduct inspections and repairs in time, as well as adjust the optical signal in the PON optical link, so that the PON optical link can be optimized to avoid the expansion of the problem. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] In order to solve the technical problem that the existing technology cannot accurately measure the optical link loss, and the optical link loss in the PON system will lead to the degradation of signal transmission quality. If these losses cannot be discovered and handled in time, it will affect the normal operation of the entire system. Figure 1 , this embodiment provides the following technical solutions:

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

[0067] The data acquisition module is used to: set up monitoring equipment on the PON optical link, obtain optical power spectrum data by regularly collecting monitoring data from the monitoring equipment, and store it in a database, wherein the optical power spectrum data is used to describe the distribution and change of optical power during the transmission of light in the optical fiber;

[0068] A data processing module is used to retrieve the acquired optical power spectrum data from the database for processing, including de-averaging, de-trending and interpolation;

[0069] The loss calculation module is used to: analyze the processed optical power spectrum data, and calculate the loss of the PON optical link through a loss calculation formula based on the optical power spectrum data, 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 used to: sort out the acquired optical power spectrum data and loss calculation results to generate a loss report;

[0071] The early warning optimization module is used to determine the loss of the PON optical link according to the loss calculation results, and automatically trigger the early warning mechanism to remind the staff to conduct inspections and repairs in a timely manner.

[0072] The technical effect of the above content is: optical power spectrum data can be obtained through the data acquisition module, and the accuracy of subsequent calculations can be improved by de-averaging, de-trending and interpolating the obtained optical power spectrum data. Then, the loss calculation module can calculate the loss of the PON optical link through the optical transmission distance calculation method, and then obtain the loss calculation result, so as to achieve the purpose of measuring the loss of the PON optical link. The calculated loss calculation result and the obtained optical power spectrum data are used to generate a loss report through the report generation module, so that the staff can evaluate, optimize and make decisions on the loss through the loss report. At the same time, the early warning optimization module can judge 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 conduct inspections and repairs in time, as well as adjust the optical signal in the PON optical link, so as to optimize the PON optical link to reduce the loss and increase the service life of the optical cable.

[0073] Data acquisition module, including:

[0074] The data monitoring module is used to: determine the monitoring points of the PON optical link, and set monitoring equipment at the determined monitoring points, and monitor the optical signal in real time through the set monitoring equipment, wherein the monitoring points are the entrance and exit of the PON optical link;

[0075] The data collection module is used to: set the collection time in advance, collect the monitoring data of the monitoring equipment regularly according to the set collection time, and obtain the optical power spectrum data, wherein the collection time is daily, hourly or minutely;

[0076] The data storage module is used 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.

[0077] The technical effect of the above content is: the data monitoring module is responsible for determining the monitoring points of the PON optical link, such as the entrance and exit, and setting corresponding monitoring equipment at these monitoring points to monitor the optical signal in real time. The data collection module automatically collects the monitoring data of the monitoring equipment according to a preset time period (such as daily, hourly or minute), thereby obtaining optical power spectrum data. Finally, the data storage module will permanently save the collected optical power spectrum data for the convenience of post-processing by the data processing module.

[0078] The monitoring equipment includes an optical power meter and a spectrometer. The optical power meter is used to measure the intensity of the optical signal, and the spectrometer is used to analyze the wavelength and intensity distribution of the optical signal. The specific process includes the following:

[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 using an analog-to-digital converter and the digital signal is transmitted to a spectrometer for further processing;

[0081] The spectrometer obtains 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 effect of the above content is: the optical power meter is mainly used to measure the intensity of the optical signal, that is, the optical power, which can be achieved by converting the optical signal through photoelectric conversion, so that the intensity information of the optical signal can be directly obtained. The spectrometer is a tool used to analyze the wavelength and intensity distribution of the optical signal. After photoelectric conversion, the generated electrons will be excited to the built-in detector array of the spectrometer, and a series of light signals of different wavelengths can be obtained. The spectrometer processes these signals, such as calculating the numerical value of the light intensity of each wavelength, so as to obtain the optical power spectrum data. The obtained optical power spectrum data contains all the information of the light in the optical fiber, including the attenuation and absorption loss of the optical power.

[0084] Data processing module, specifically:

[0085] De-averaging: De-averaging is performed on optical power spectrum data with large noise. The average value of each optical power spectrum data is calculated and then replaced with the original data, thereby reducing the noise level of the optical power spectrum data.

[0086] Detrending: For optical power spectrum data with obvious trends, use one or more moving average methods to remove the trends of the optical power spectrum data;

[0087] Interpolation: In the optical power spectrum data, a data point is a value corresponding to a specific wavelength position in the spectrum graph. Linear interpolation is used to fill in the missing data points in the optical power spectrum data.

[0088] The technical effects of the above content are: de-averaging can effectively eliminate noise by calculating the average value of each optical power spectrum data and replacing it with the original data, so as to better understand the optical power spectrum data. De-trending can eliminate the trend of the optical power spectrum data by using some methods to remove the heat of the optical power spectrum data, such as one or more moving average methods, and interpolation uses linear interpolation to fill in the missing data points, thereby effectively filling the gaps in the data points and making the optical power spectrum data more complete and coherent. By performing de-averaging, de-trending and interpolation on the optical power spectrum data, the optical power spectrum data can be better understood, thereby improving the accuracy of subsequent calculations.

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

[0090] Determine the optical transmission distance: Determine the transmission distance of the optical signal on the PON optical link based on the optical power spectrum data and the type and optical fiber specifications of the PON optical link. The optical power attenuation information in the optical power spectrum data is combined with the light propagation speed of light in the optical fiber and the loss coefficient of light in the optical fiber to calculate the distance of light transmission in the optical fiber.

[0091] Determine the optical transmission constant: Determine the optical transmission constant by querying the data of the PON optical link. The optical transmission constant is a set of parameters of the transmission characteristics of the optical signal in the optical fiber.

[0092] Calculate optical power attenuation: Based on the optical transmission distance and the optical transmission constant, use the optical transmission distance calculation method to calculate the optical power attenuation of the optical signal on the PON optical link;

[0093] Calculate the optical signal transmission distance: Based on the optical power attenuation and the optical transmission constant, use the optical signal transmission distance calculation method to calculate the transmission distance of the optical signal on the PON optical link;

[0094] Calculate the optical link loss: Use the optical link loss formula to calculate the optical link loss based on the optical power attenuation and the optical signal transmission distance. The optical link loss formula includes the cosine attenuation method and the exponential attenuation method.

[0095] The technical effects of the above content are as follows: first, by analyzing the optical power spectrum data and information such as PON type and optical fiber specifications, the transmission distance of the optical signal on the PON optical link can be accurately calculated, which provides an important basis for the subsequent optical power attenuation calculation. Secondly, 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. Finally, combining the optical power attenuation and the optical transmission constant, the transmission distance of the optical signal on the PON optical link can be calculated. Through the calculation of optical power attenuation and optical signal transmission distance, the loss of the optical link is further calculated using the optical link loss formula, which includes two calculation methods: cosine attenuation method and exponential attenuation method. The loss calculation results obtained can provide a reference for optimizing the performance of the PON optical link, thereby achieving more efficient and stable optical transmission.

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

[0097] Import the optical power spectrum data and loss calculation results into the report generation module;

[0098] Visualize optical power spectrum data, such as drawing spectrum graphs and power distribution graphs;

[0099] Generate loss report based on optical power spectrum data and loss calculation results;

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

[0101] The technical effect of the above content is: importing the optical power spectrum data and loss calculation results into the report generation module, integrating the optical power spectrum data and loss calculation results into a report through the report generation module, thereby generating a loss report, and providing an export function to facilitate staff to download and print, so that staff can perform loss assessment, optimization and decision-making through the loss report.

[0102] Early warning optimization module, including:

[0103] The early warning module is used to analyze the loss calculation results, find out the abnormal loss of the PON optical link, and then automatically trigger the early warning mechanism, including:

[0104] Statistical analysis methods are used to analyze the loss calculation results;

[0105] By presetting a threshold value and applying the set threshold value to the actual loss calculation result;

[0106] Determine whether the loss calculation result exceeds the set threshold;

[0107] If the set threshold is exceeded, the PON optical link will experience abnormal loss;

[0108] The optimization module is used to: remind the staff to conduct timely inspection and maintenance according to the triggered early warning mechanism, and at the same time, adjust the optical signal in the PON optical link according to the calculated loss calculation results, including adjusting the output power of the light source and changing the parameters of the optical division multiplexer.

[0109] The technical effect of the above content is: the early warning module is responsible for real-time monitoring of the loss calculation results. Once a problem is found, it will automatically trigger the early warning mechanism to remind the staff to pay attention, and the optimization module is responsible for reminding the staff to conduct timely inspection and maintenance of the optical signal in the PON optical link based on the information triggered by the early warning mechanism and the loss calculation results, and to adjust the optical signal in the PON optical link, including adjusting the output power of the light source and changing the parameters of the optical division multiplexer, so as to optimize the PON optical link and avoid the expansion of the problem.

[0110] Specifically, the early warning optimization module also includes:

[0111] A first operating parameter retrieving module, used for retrieving the operating parameters of the PON optical link when there is no loss abnormality in the PON optical link, wherein the operating parameters of the PON optical link include the output power of the light source, the insertion loss of the optical division multiplexer of the PON optical link, the optical fiber attenuation coefficient and the passive device loss;

[0112] A loss operation evaluation coefficient acquisition module, used to obtain a loss operation evaluation coefficient by using the optical division multiplexer insertion loss and passive device loss of the PON optical link;

[0113] Wherein, the loss operation evaluation coefficient is obtained by the following formula:

[0114]

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

[0116] A loss coefficient comparison module, used for comparing the loss operation evaluation coefficient with a preset loss operation coefficient threshold;

[0117] The risk warning module is used to retrieve the light source output power and the optical fiber attenuation coefficient to issue an operation risk warning for the PON optical link when the loss operation evaluation coefficient is lower than a preset loss operation coefficient threshold.

[0118] The technical effect of the above technical solution is: through the first operation parameter retrieval module, the technical solution can retrieve and monitor key operation parameters such as light source output power, optical division multiplexer insertion loss, optical fiber attenuation coefficient and passive device loss in real time when the PON optical link is loss-free. The risk warning module can issue an operation risk warning in time when the loss operation evaluation coefficient is lower than the preset threshold, thereby allowing the network administrator or the automation system to take timely measures to avoid potential optical link failures. The loss operation evaluation coefficient acquisition module uses the optical division multiplexer insertion loss and passive device loss of the PON optical link to dynamically calculate the loss operation evaluation coefficient through a specific formula. This coefficient not only takes into account the current loss value, but also takes into account the range of loss variation (maximum and minimum values), thereby providing a more comprehensive loss status evaluation. Through real-time monitoring and early warning, as well as 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, improve network stability and reliability, and thus ensure the user's service quality and experience. Through modular design, the technical solution realizes intelligent monitoring and early warning of PON optical link loss. The collaborative work between the various modules makes the entire early warning optimization process more automated and efficient. The technical solution can adjust the preset loss operation coefficient threshold according to actual needs to adapt to different network environments and application scenarios. At the same time, the technical solution can also be further expanded to include more monitoring parameters and early warning mechanisms, so as to more comprehensively ensure the normal operation of the PON optical link.

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

[0120] Specifically, the risk warning module includes:

[0121] A second operation parameter retrieving module, used for retrieving the light source output power and the optical fiber attenuation coefficient when the loss operation evaluation coefficient is lower than a preset loss operation coefficient threshold;

[0122] An operation risk coefficient acquisition module, used to obtain an operation risk coefficient by using the light source output power and the optical fiber attenuation coefficient in combination with a loss operation evaluation coefficient;

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

[0124]

[0125] Where F represents the operation risk factor; n represents the number of unit times experienced by the PON optical link operation, and the unit time is 1s; P si represents the light source output power corresponding to the i-th unit time; P se Indicates the preset standard value of light source output power; P zi represents the total loss corresponding to the i-th unit time; P ze represents the preset maximum allowable value of total loss; s represents the optical fiber attenuation coefficient; W represents the loss operation evaluation coefficient; W y Indicates the preset loss operation coefficient threshold; P zmax Indicates the maximum total loss generated during actual operation;

[0126] A risk factor comparison module, used to compare the operation risk factor with a preset risk factor threshold;

[0127] The abnormal risk determination and early warning module is used to determine that the PON optical link has an abnormal operation risk and issue an abnormal risk early warning when the operation risk coefficient exceeds a preset risk coefficient threshold.

[0128] The technical effect of the above technical solution is: the risk warning module calculates the operation risk coefficient by using a specific formula by comprehensively considering multiple parameters such as the light source output power, the optical fiber attenuation coefficient and the loss operation evaluation coefficient. This method can more comprehensively reflect the operation status of the PON optical link, thereby providing a more accurate risk assessment. When the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold, the module will automatically retrieve key parameters such as the light source output power and the optical fiber attenuation coefficient, and perform real-time calculation and analysis. This real-time and dynamic nature enables the system to respond quickly to changes in the PON optical link and issue early warnings in a timely manner. 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 precise early warning mechanism helps to reduce false alarms and missed alarms and improve the reliability and accuracy of the system. Through real-time monitoring and early warning, the technical solution can promptly discover and solve potential problems in the PON optical link, thereby avoiding network interruptions and failures. This helps to improve the stability and reliability of the network and ensure the service quality and experience of users. The design of the entire risk warning module embodies the characteristics of intelligence and automation. The module can automatically complete tasks such as parameter retrieval, calculation and analysis, and early warning judgment without manual intervention. This reduces operation and maintenance 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 also be further expanded to include more monitoring parameters and early warning mechanisms, so as to more comprehensively ensure the normal operation of the PON optical link.

[0129] In summary, this technical solution effectively improves the risk warning capability of PON optical links through comprehensive risk assessment, real-time and dynamic performance, accurate warning and judgment, improved network stability and reliability, intelligence and automation, flexibility and scalability, and provides strong guarantees for the stable operation of the network.

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

[0131] The data acquisition module obtains the optical power spectrum data by regularly collecting the monitoring data of the monitoring equipment;

[0132] The data processing module performs de-averaging, de-trending 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 the loss calculation module, which calculates the loss of the PON optical link using the optical transmission distance calculation method to obtain the loss calculation result;

[0134] The calculated loss results and the acquired optical power spectrum data are used to generate a loss report through the report generation module. The staff can understand the loss of the PON optical link by downloading and printing the loss report;

[0135] At the same time, the early warning optimization module determines the loss of the PON optical link based on the loss calculation results, and automatically triggers the early warning mechanism to remind staff to conduct inspections and repairs in a timely manner, thereby optimizing the PON optical link.

[0136] The present invention can obtain optical power spectrum data through a data acquisition module. By performing de-averaging, de-trending and interpolation processing on the obtained optical power spectrum data, the optical power spectrum data can be better understood, thereby improving the accuracy of subsequent calculations. Then, the loss calculation module can calculate the loss of the PON optical link through an optical transmission distance calculation method to achieve the purpose of measuring the loss of the PON optical link. The calculated loss calculation result and the obtained optical power spectrum data are integrated into the loss report through a report generation module, so that the staff can perform loss evaluation, optimization and decision-making through the loss report. At the same time, the loss situation of the PON optical link can be judged according to the loss calculation result. Once a problem is found, an early warning mechanism will be automatically triggered to remind the staff to conduct inspections and repairs in a timely manner, as well as adjust the optical signal in the PON optical link to reduce the loss and avoid the expansion of the problem.

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

[0138] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A loss measurement system based on distribution automation PON optical link, characterized in that: include: A data acquisition module is used to regularly collect monitoring data of monitoring equipment on the PON optical link, obtain optical power spectrum data and store it in a database, wherein the optical power spectrum data is used to describe the distribution and change of optical power during the transmission of light in the optical fiber; A data processing module, used for retrieving the acquired optical power spectrum data from the database for processing, including de-averaging, de-trending and interpolation; A loss calculation module is used to analyze the processed optical power spectrum data and calculate the loss of the PON optical link through a loss calculation formula based on the optical power spectrum data; The report generation module is used to organize the acquired optical power spectrum data and loss calculation results to generate a loss report; The early warning optimization module is used to determine the loss of the PON optical link based on the loss calculation results, and automatically trigger the early warning mechanism to remind the staff to conduct inspections and repairs in a timely manner.

2. The loss measurement system based on distribution automation PON optical link according to claim 1 is characterized in that: The data acquisition module comprises: A data monitoring module is a monitoring device provided at a monitoring point of a PON optical link, and is used to monitor optical signals in real time, wherein the monitoring point is an entrance and an exit of the PON optical link; The data collection module is used to set the collection time in advance, collect the monitoring data of the monitoring equipment regularly according to the set collection time, and obtain the optical power spectrum data; The data storage module is used 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.

3. The loss measurement system based on distribution automation PON optical link according to claim 1 is characterized in that: The monitoring device includes an optical power meter and a spectrometer, wherein the optical power meter is used to measure the intensity of the optical signal, and the spectrometer is used to analyze the wavelength and intensity distribution of the optical signal, and specifically includes the following steps: The optical signal measured by the optical power meter is converted into an electrical signal after photoelectric conversion; The electrical signal is converted into a digital signal using an analog-to-digital converter, and the digital signal is transmitted to a spectrometer; The spectrometer obtains optical power spectrum data by analyzing the wavelength and intensity of the optical signal; The optical power spectrum data reflects the loss of light in the optical fiber, including the attenuation and absorption loss of optical power.

4. The loss measurement system based on distribution automation PON optical link according to claim 1 is characterized in that: The data processing module is specifically: De-averaging: De-averaging is performed on optical power spectrum data with large noise. The average value of each optical power spectrum data is calculated and then replaced with the original data to reduce the noise level of the optical power spectrum data. Detrending: For optical power spectrum data with obvious trends, use one or more moving average methods to remove the trends 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 loss measurement system based on distribution automation PON optical link according to claim 1 is characterized in that: In the loss calculation module, the loss of the PON optical link is calculated by the loss calculation formula, which specifically includes the following steps: Determine the optical transmission distance: Determine the transmission distance of the optical signal on the PON optical link based on the optical power spectrum data and the type and fiber specifications of the PON optical link; Determine the optical transmission constant: Determine the optical transmission constant by querying the data of the PON optical link; Calculate optical power attenuation: Based on the optical transmission distance and the optical transmission constant, use the optical transmission distance calculation method to calculate the optical power attenuation of the optical signal on the PON optical link; Calculate the optical signal transmission distance: Based on the optical power attenuation and the optical transmission constant, use the optical signal transmission distance calculation method to calculate the transmission distance of the optical signal on the PON optical link; Calculate the optical link loss: Calculate the optical link loss using the optical link loss formula based on the optical power attenuation and the optical signal transmission distance. The optical link loss formula includes the cosine attenuation method and the exponential attenuation method. Among them, the optical transmission distance calculation methods include fixed matrix method, minimum optical path method and short path method.

6. The loss measurement system based on distribution automation PON optical link according to claim 1, characterized in that: The report generation module specifically includes the following steps: Import the optical power spectrum data and loss calculation results into the report generation module, integrate the optical power spectrum data and loss calculation results into one report, and generate a loss report; Visualize loss reports.

7. The loss measurement system based on distribution automation PON optical link according to claim 1 is characterized in that: The early warning optimization module includes: The early warning module is used to analyze the loss calculation results, find out the abnormal loss of the PON optical link, and automatically trigger the early warning mechanism; The optimization module is used to remind the staff to conduct timely inspection and maintenance according to the triggered early warning mechanism. At the same time, the optical signal in the PON optical link is adjusted according to the calculated loss calculation results, including adjusting the output power of the light source and changing the parameters of the optical division multiplexer.

8. The loss measurement system based on distribution automation PON optical link according to claim 7 is characterized in that: The early warning optimization module also includes: A first operating parameter retrieving module is used to retrieve operating parameters of the PON optical link when there is no loss abnormality in the PON optical link, wherein the operating parameters of the PON optical link include light source output power, optical division multiplexer insertion loss of the PON optical link, optical fiber attenuation coefficient, and passive device loss; A loss operation evaluation coefficient acquisition module is used to obtain a loss operation evaluation coefficient using an optical division multiplexer insertion loss and a passive device loss of a PON optical link; The loss operation evaluation coefficient is obtained by the following formula: Where W represents the loss operation evaluation coefficient; n represents the number of unit times experienced by the PON optical link operation, and the unit time is 1s; P ci represents the insertion loss of the optical division multiplexer corresponding to the i-th unit time; P wi represents the passive device loss corresponding to the i-th unit time; P zi represents the total loss corresponding to the i-th unit time; P wmaxi represents the maximum value of passive device loss corresponding to the i-th unit time; P cmaxi It represents the maximum insertion loss of the optical division multiplexer corresponding to the i-th unit time; A loss coefficient comparison module, used to compare the loss operation evaluation coefficient with a preset loss operation coefficient threshold; The risk warning module is used to call the light source output power and optical fiber attenuation coefficient to issue an operation risk warning for the PON optical link when the loss operation evaluation coefficient is lower than the preset loss operation coefficient threshold.

9. The loss measurement system based on distribution automation PON optical link according to claim 8, characterized in that: The risk warning module includes: A second operation parameter retrieving module, used for retrieving the light source output power and the optical fiber attenuation coefficient when the loss operation evaluation coefficient is lower than a preset loss operation coefficient threshold; An operation risk coefficient acquisition module is used to obtain an operation risk coefficient by using the light source output power and the optical fiber attenuation coefficient in combination with the loss operation evaluation coefficient; The operation risk coefficient is obtained by the following formula: Where F represents the operational risk factor; P si represents the light source output power corresponding to the i-th unit time; P se Indicates the preset standard value of light source output power; P zi represents the total loss corresponding to the i-th unit time; P ze represents the preset maximum allowable value of total loss; s represents the optical fiber attenuation coefficient; W represents the loss operation evaluation coefficient; W y Indicates the preset loss operation coefficient threshold; P zmax Indicates the maximum total loss generated during actual operation; A risk factor comparison module is used to compare the operation risk factor with a preset risk factor threshold; The abnormal risk determination and early warning module is used to determine that the PON optical link has an abnormal operation risk and issue an abnormal risk early warning when the operation risk coefficient exceeds a preset risk coefficient threshold.

10. A method for measuring the loss of a PON optical link based on power distribution automation, applied to a system for measuring the loss of a PON optical link based on power distribution automation as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Set up a monitoring device on the PON optical link, obtain the optical power spectrum data by regularly collecting the monitoring data of the monitoring device and store it in the database; Step 2: De-averaging, de-trending and interpolation processing are performed on the acquired optical power spectrum data; Step 3: Based on the processed optical power spectrum data, the loss of the PON optical link is calculated using a loss calculation formula to obtain a loss calculation result; Step 4: Arrange the acquired optical power spectrum data and loss calculation results to generate a loss report; Step 5: Determine the loss of the PON optical link based on the loss calculation result, and automatically trigger the early warning mechanism to remind the staff to conduct inspection and maintenance in time, thereby optimizing the PON optical link.

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