Method, device and electronic equipment for monitoring the quality of an optical cable

Abstract

The application discloses a kind of optical cable quality monitoring method, device and electronic equipment.The method comprises: obtaining multiple monitoring data returned by multiple sensing systems, wherein each sensing system is set on the optical cable of corresponding laying mode according to the category of sensing system, and the optical cable includes at least one of the following according to laying mode: channel optical cable, buried optical cable and overhead optical cable;Group multiple monitoring data according to the category of sensing system, obtain multiple groups of monitoring data, wherein each group of monitoring data is obtained by monitoring the optical cable of corresponding laying mode;Determine whether there is abnormal data in each group of monitoring data according to the preset condition corresponding to the optical cable of different laying mode, and issue alarm information corresponding to the optical cable in the case of abnormal data.The application solves the technical problem that the monitoring means of related art for the operation of circuit optical cable is single, and different laying mode optical cable cannot be comprehensively monitored.

Description

Technical Field

[0001] This application relates to the field of data monitoring, and more specifically, to a method, apparatus, and electronic device for monitoring the quality of optical cables. Background Technology

[0002] Optical cables for power communication are generally installed along with the primary power line, mainly consisting of overhead, underground, and trench sections. Due to their unique installation method, overhead optical cables inevitably suffer from seasonal icing, sandstorms, lightning, and other extreme weather conditions during long-term use. Furthermore, the high-altitude suspension causes tensile forces such as gravity and tension, leading to localized stress concentration and inelastic deformation, significantly impacting their lifespan under long-term stress. The underground section of the optical cable extends from the power line terminal tower down to the trench within the station. Because this section is buried below ground, surface construction work may affect its normal operation, posing a significant risk of external damage. Optical cables in trenches are typically laid within the cable trenches within the station, often sharing the trench with the primary power line at most sites. Due to the sealed and airtight nature of the cable trenches, the potential for water ingress and fire hazards is extremely high.

[0003] Currently, the monitoring methods for the operational quality of overhead optical cables are relatively complete, but the monitoring of underground optical cables and trench optical cables is not yet complete, and there is a lack of means to conduct comprehensive monitoring of the operational status of optical cables.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This application provides a method, apparatus, and electronic device for monitoring the quality of optical cables, in order to at least solve the technical problem that related technologies have limited means of monitoring the operation of optical cables and cannot comprehensively monitor optical cables with different laying methods.

[0006] According to one aspect of the embodiments of this application, a method for monitoring the quality of optical cables is provided, comprising: acquiring multiple monitoring data returned by multiple sensing systems, wherein each sensing system is installed on an optical cable of a corresponding laying method according to its type, the optical cable including trench optical cable, underground optical cable and overhead optical cable according to the laying method, and each type of sensing system is used to detect optical cables of one laying method; grouping the multiple monitoring data according to the type of sensing system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring optical cables of a corresponding laying method; determining whether there is abnormal data in each set of monitoring data according to preset conditions corresponding to optical cables of different laying methods, and issuing an alarm message corresponding to the optical cable if abnormal data is found, wherein the preset conditions are used to determine whether there is an abnormality in the quality of optical cables of the corresponding laying method.

[0007] Optionally, the multiple sets of monitoring data include first monitoring data, wherein the first monitoring data is collected by the sensing system on the optical cable in the trench; multiple monitoring data returned by multiple sensing systems are acquired, including: acquiring first temperature data, transmission rate of optical signal in the optical cable and echo time collected by the sensing system on the optical cable in the trench; determining the location information corresponding to the first temperature data based on the transmission rate and echo time; and at least the first temperature data and the location information corresponding to the first temperature data are determined as the first monitoring data.

[0008] Optionally, the multiple sets of monitoring data include second monitoring data, wherein the second monitoring data is collected by the sensing system on the buried optical cable; multiple monitoring data returned by multiple sensing systems are acquired, including: acquiring test data and reference data collected by the sensing system on the buried optical cable, wherein the test data and reference data are light data obtained after the light emitted by the light-emitting module in the sensing system on the buried optical cable passes through a coupler, the test data carries vibration information at different locations of the buried optical cable, and the reference data is control data generated simultaneously with the test data without carrying vibration information; displaying the test data and reference data corresponding to different times to obtain a waveform diagram; and determining the data information in the waveform diagram as the second monitoring data.

[0009] Optionally, the multiple sets of monitoring data include third monitoring data, wherein the third monitoring data is collected by the sensing system on the overhead optical cable; multiple monitoring data returned by multiple sensing systems are acquired, including: acquiring the power data and frequency shift data of light at different locations collected by the sensing system on the overhead optical cable; determining the second temperature data and stress data of the overhead optical cable based on the power data and frequency shift data; and determining the second temperature data and stress data as the third monitoring data.

[0010] Optionally, after obtaining multiple sets of monitoring data, the method further includes: storing the multiple sets of monitoring data in a database; obtaining multiple historical monitoring data corresponding to optical cables with arbitrary laying methods from the database, and generating monitoring data curves corresponding to optical cables with arbitrary laying methods based on the multiple historical monitoring data; predicting the probability of anomalies in the monitoring data curves to obtain a target probability; and issuing a first alarm message when the target probability is greater than a preset probability, wherein the first alarm message is used to characterize the presence of anomalies in the optical cable.

[0011] Optionally, before issuing an alarm message corresponding to the optical cable in the presence of abnormal data, the method further includes: determining the abnormality level corresponding to the optical cable that generated the abnormal data, wherein the abnormality level is positively correlated with the number of times abnormal data occurs in the optical cable with the corresponding laying method; determining the display mark of the abnormal data based on the abnormality level, wherein the display mark corresponds to the abnormality level; obtaining the abnormal location corresponding to the abnormal data, and marking the abnormal location on an electronic map based on the display mark, wherein the electronic map is used to display the geographical location of the optical cable.

[0012] Optionally, determining the anomaly level corresponding to the optical cable that generated abnormal data includes: obtaining the number of times the optical cable of the target laying method generated abnormal data within a preset time period, and the abnormal time corresponding to the abnormal data, wherein the optical cable of the target laying method is any one of trench optical cable, underground optical cable, and overhead optical cable; determining the time difference of each adjacent abnormal time from the abnormal data, denoted as the first time; if the sum of the first times is less than the preset time, updating the anomaly level of the optical cable that generated abnormal data from the first level to the second level, wherein the severity of the second level is higher than the severity of the first level.

[0013] Optionally, in the event of abnormal data, an alarm message corresponding to the optical cable is issued, including: dividing the optical cables in different areas to determine the range information corresponding to the optical cables; determining the target range information corresponding to the abnormal data; and determining the target alarm message corresponding to the alarm level based on the alarm level corresponding to the target range information.

[0014] According to another aspect of the embodiments of this application, a device for monitoring the quality of optical cables is also provided, comprising: an acquisition module for acquiring multiple monitoring data returned by multiple sensing systems, wherein each sensing system is installed on an optical cable of a corresponding laying method according to the type of the sensing system, and the optical cable is classified according to the laying method as: trench optical cable, underground optical cable and overhead optical cable, and each type of sensing system is used to detect an optical cable of a certain laying method; a grouping module for grouping the multiple monitoring data according to the type of sensing system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring an optical cable of a corresponding laying method; and an alarm module for judging whether there is abnormal data in each set of monitoring data according to preset conditions corresponding to optical cables of different laying methods, and issuing an alarm message corresponding to the optical cable if abnormal data is found, wherein the preset conditions are used to judge whether there is an abnormality in the quality of the optical cable of the corresponding laying method.

[0015] According to another aspect of the embodiments of this application, an electronic device is also provided, including: a memory for storing program instructions; and a processor connected to the memory for executing program instructions to perform the following functions: acquiring multiple monitoring data returned by multiple sensing systems, wherein each sensing system is installed on an optical cable of a corresponding laying method according to its type, and the optical cable includes, according to the laying method, trench optical cable, underground optical cable, and overhead optical cable, and each type of sensing system is used to detect an optical cable of a certain laying method; grouping the multiple monitoring data according to the type of sensing system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring an optical cable of a corresponding laying method; judging whether there is abnormal data in each set of monitoring data according to preset conditions corresponding to optical cables of different laying methods, and issuing an alarm message corresponding to the optical cable if abnormal data is found, wherein the preset conditions are used to judge whether there is an abnormality in the quality of the optical cable of the corresponding laying method.

[0016] In this embodiment, multiple monitoring data returned by multiple sensing systems are acquired. Each sensing system is installed on the optical cable according to its type and the corresponding laying method. The optical cables include trench optical cables, underground optical cables, and overhead optical cables. Each type of sensing system is used to detect optical cables of one laying method. The multiple monitoring data are grouped according to the type of sensing system to obtain multiple sets of monitoring data. Each set of monitoring data is obtained by monitoring the optical cable of the corresponding laying method. According to preset conditions corresponding to optical cables of different laying methods, it is determined whether there is abnormal data in each set of monitoring data. If abnormal data is found, an alarm message corresponding to the optical cable is issued. The preset conditions are used to determine whether there is an abnormality in the quality of the optical cable of the corresponding laying method. This achieves the purpose of comprehensive monitoring of optical cables of different laying methods, thereby realizing the technical effect of real-time monitoring of the operation of power line optical cables. This solves the technical problem that related technologies have a single monitoring method for the operation of circuit optical cables and cannot comprehensively monitor optical cables of different laying methods. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a hardware structure block diagram of a computer terminal (or electronic device) for implementing a method for monitoring the quality of optical cables according to an embodiment of this application;

[0019] Figure 2 This is a flowchart of a method for monitoring the quality of an optical cable according to an embodiment of this application;

[0020] Figure 3a This is a schematic diagram of a scattering effect within an optical fiber according to an embodiment of this application;

[0021] Figure 3b This is a connection structure diagram of a component of a distributed Brillouin scattering fiber optic sensing system according to an embodiment of this application;

[0022] Figure 3c This is a structural diagram of a software module composition according to an embodiment of this application;

[0023] Figure 4 This is a structural diagram of an optical cable quality monitoring device according to an embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] The existing technologies for monitoring the quality of optical cables are relatively limited, only monitoring the overhead, underground, or trench sections of the optical cable separately. There is no comprehensive monitoring of the entire optical cable line, and the means for monitoring the quality of optical cables in trenches are limited, making it impossible to monitor the operation of optical cables in trenches in a reasonable and effective manner.

[0027] To address the problems existing in related technologies, conduct in-depth research on the monitoring of operational optical cables, and improve the level of safe operation of optical cables, this application adopts distributed temperature sensing monitoring technology, distributed vibration sensing monitoring technology, and optical fiber core stress-strain analysis to carry out research on optical cable quality monitoring systems, which are described in detail below.

[0028] The optical cable quality monitoring method provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Figure 1 A hardware block diagram of a computer terminal (or electronic device) for implementing a method to monitor the quality of optical cables is shown. Figure 1 As shown, the computer terminal 10 (or electronic device 10) may include one or more processors (shown as 102a, 102b, ..., 102n in the figure) (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 104 for storing data, and a transmission module 106 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer terminal 10 may also include... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0029] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits can be implemented wholly or partially as software, hardware, firmware, or any other combination. Furthermore, the data processing circuits can be a single, independent processing module, or wholly or partially integrated into any other element within the computer terminal 10 (or electronic device). As involved in the embodiments of this application, the data processing circuit serves as a processor control mechanism (e.g., selection of a variable resistor termination path connected to an interface).

[0030] The memory 104 can be used to store software programs and modules for application software, such as the program instructions / data storage device corresponding to the optical cable quality monitoring method in this embodiment. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby realizing the aforementioned optical cable quality monitoring method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0031] The transmission module 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the computer terminal 10. In one example, the transmission module 106 includes a network interface controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission module 106 may be a radio frequency (RF) module, used for wireless communication with the Internet.

[0032] The display may be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer terminal 10 (or electronic device).

[0033] It should be noted here that, in some optional embodiments, the above... Figure 1 The computer device (or electronic device) shown may include hardware elements (including circuitry), software elements (including computer code stored on a computer-readable medium), or a combination of both hardware and software elements. It should be noted that... Figure 1 This is only one instance of a particular specific instance, and is intended to illustrate the types of components that may exist in the aforementioned computer equipment (or electronic equipment).

[0034] Under the above operating environment, this application provides an embodiment of a method for monitoring the quality of optical cables. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0035] Figure 2 This is a flowchart of a method for monitoring the quality of an optical cable according to an embodiment of this application, such as... Figure 2 As shown, the method includes the following steps:

[0036] Step S202: Obtain multiple monitoring data returned by multiple sensor systems. Each sensor system is installed on the optical cable with the corresponding laying method according to the type of sensor system. The optical cables are laid in the following ways: trench optical cable, underground optical cable and overhead optical cable. Each type of sensor system is used to detect optical cables with one laying method.

[0037] In this embodiment of the application, the optical cable quality monitoring system based on distributed optical fiber sensors will conduct comprehensive monitoring of the quality of power line optical cables throughout the entire process, including monitoring of water immersion and fire in trench optical cables, monitoring of external damage to buried optical cables, and monitoring of the operating status of overhead optical cables, so as to achieve comprehensive monitoring of power lines and keep abreast of the operating status of power line optical cables in real time.

[0038] Step S204: Group the multiple monitoring data according to the type of sensing system to obtain multiple sets of monitoring data. Each set of monitoring data is obtained by monitoring the optical cable with the corresponding laying method.

[0039] In this embodiment of the application, since it is necessary to monitor optical cables with different laying methods and the content or data of the monitoring are different, the monitoring data is grouped, and each group of monitoring data corresponds to a sensing system. At the same time, each group of monitoring data is also obtained by monitoring optical cables with a certain laying method.

[0040] Step S206: Determine whether there is abnormal data in each set of monitoring data according to the preset conditions corresponding to optical cables with different laying methods, and issue an alarm message corresponding to the optical cable if there is abnormal data. The preset conditions are used to determine whether there is an abnormality in the quality of the optical cable with the corresponding laying method.

[0041] In this embodiment, the system can monitor situations such as water immersion and fire in the optical cable trench. When an abnormality occurs in the optical cable in the trench, an alarm is promptly reported on the monitoring center client to remind maintenance personnel to pay attention to the alarm. In addition, this embodiment can monitor the external damage of buried optical cables in real time. When an external damage risk is detected in the buried optical cable, an alarm is generated through the monitoring client to remind maintenance personnel to pay attention and understand the on-site situation. This embodiment can also monitor the operating status of overhead optical cables in real time, including whether the optical cable is covered with ice, whether the optical cable is under excessive tension, and whether the optical cable swing amplitude is too large, and monitor the optical power of the optical cable core in real time.

[0042] In step S202 of the above-mentioned optical cable quality monitoring method, the multiple sets of monitoring data include first monitoring data, wherein the first monitoring data is collected by the sensing system on the optical cable in the trench; acquiring multiple monitoring data returned by multiple sensing systems specifically includes the following steps: acquiring the first temperature data, the transmission rate of the optical signal in the optical cable and the echo time collected by the sensing system on the optical cable in the trench; determining the location information corresponding to the first temperature data based on the transmission rate and echo time; and determining at least the first temperature data and the location information corresponding to the first temperature data as the first monitoring data.

[0043] In this application embodiment, it is necessary to conduct monitoring and research on water immersion and fire hazards in cable trenches. Cable trenches refer to the portion of the cable trench within the station leading to the control room. Because the trench is a confined environment and contains a large number of cables, a fire in the trench may not be detected immediately, potentially leading to further escalation of the accident due to inadequate handling. Similarly, water seepage or leakage in the trench may also go undetected in a timely manner. Furthermore, due to the unique environment within the trench, moisture does not evaporate easily, and prolonged immersion in water may degrade the quality of fiber optic communication and significantly reduce the cable's lifespan. Therefore, this application embodiment conducts research on monitoring water immersion and fire hazards in cable trenches to prevent communication interruptions due to water immersion or the escalation of accidents due to fire.

[0044] In the monitoring of optical cables in trenches, a Distributed Temperature Sensor (DTS) system is employed. The DTS mainly consists of a linear heat-sensing fire detector terminal and an integrated detection software system, enabling real-time temperature measurement and precise location. Its principle is primarily based on backscattering, and can be categorized into three types, with Raman scattering being the most widely used. The distributed Raman scattering system utilizes the temperature effect of Raman scattering in optical fibers. Temperature changes in the spatial portion of the fiber cause changes in the intensity of backscattered Raman light. A wavelength division multiplexer and a photodetector collect the backscattered Raman light signal carrying temperature information (i.e., the aforementioned first temperature data). Signal processing demodulates the real-time temperature information to achieve the monitoring purpose. Using optical time-domain reflectometry (OTDR), based on the light transmission rate in the optical fiber (referring to the optical cable in this application) and the echo time of the backscattered Raman light, the temperature point can be located (i.e., the aforementioned location information).

[0045] In step S202 of the above-mentioned optical cable quality monitoring method, the multiple sets of monitoring data include second monitoring data, which is collected by the sensing system on the buried optical cable. Acquiring multiple monitoring data returned by multiple sensing systems specifically includes the following steps: acquiring test data and reference data collected by the sensing system on the buried optical cable, wherein the test data and reference data are light data obtained after the light emitted by the light-emitting module in the sensing system on the buried optical cable passes through a coupler; the test data carries vibration information at different locations on the buried optical cable, and the reference data is control data generated simultaneously with the test data that does not carry vibration information; displaying the test data and reference data corresponding to different times to obtain a waveform diagram; and determining the data information in the waveform diagram as the second monitoring data.

[0046] In this embodiment, it is necessary to conduct monitoring and research on external damage to buried optical cables. Buried optical cables mainly refer to the section of optical cable from the terminal tower of the line to the cable trench of the substation. This section of optical cable is often broken due to municipal construction or line renovation, causing power grid accidents. This embodiment utilizes fiber optic vibration sensing technology to prevent external damage to power optical cables. By using power communication optical cables as sensors, vibrations near the optical cable are monitored to detect construction machinery, human sabotage, and other behaviors in advance, thereby achieving the purpose of preventing external damage to power optical cables.

[0047] Specifically, in the monitoring of buried optical cables, a distributed vibration sensing system is employed. This system uses a narrow-linewidth laser as its light source and leverages the coherent fading effect between backscattered Rayleigh (RBS) signals to achieve distributed measurement of the disturbance signal. When an external disturbance event acts on the optical fiber, the core refractive index and fiber length at the disturbance location change, causing amplitude and phase changes in the RBS at that location. By analyzing the Rayleigh scattering curves before and after the disturbance event, dynamic disturbance events can be detected. This technology boasts high sensitivity and fast measurement response, enabling long-distance, fully distributed, blind-zone-free dynamic monitoring.

[0048] The laser (i.e., the aforementioned light-emitting module) emits a series of laser beams, which are split into two paths after passing through a coupler. One path is the probe light (i.e., the aforementioned test data), and the other is the reference light (i.e., the aforementioned reference data). The probe light is pulsed and input into the fiber under test. The reflected signal light carries relevant information about the fiber under test (vibration information generated at a certain point in the fiber by external forces). The other path, the reference light, serves as the local light and is coherently coupled with the Rayleigh scattering echo. The coherent light then enters the photoelectric detection module. The photoelectric converted signal is acquired and processed by the acquisition system, and finally, the host computer displays the time-domain and frequency-domain waveforms to obtain a waveform diagram. The data in the waveform diagram is the aforementioned second monitoring data.

[0049] In step S202 of the above-mentioned optical cable quality monitoring method, the multiple sets of monitoring data include third monitoring data, wherein the third monitoring data is collected by the sensing system on the overhead optical cable; acquiring multiple monitoring data returned by multiple sensing systems specifically includes the following steps: acquiring the power data and frequency shift data of light at different locations collected by the sensing system on the overhead optical cable; determining the second temperature data and stress data of the overhead optical cable based on the power data and frequency shift data; and determining the second temperature data and stress data as the third monitoring data.

[0050] In this embodiment, it is also necessary to monitor and study the operating status of the overhead optical cable. The overhead optical cable is generally installed along with the primary line and is greatly affected by natural weather such as rain, snow, ice, and strong winds during operation. In this embodiment, the optical cable online monitoring method using fiber optic Brillouin time domain reflectance (BOTDR) technology is used to measure the temperature and strain of the overhead optical cable. BOTDR can monitor temperature and line tension, monitor the core temperature of the line, and monitor the stress on the line during repeated icing and galloping, thereby monitoring the operating status of the overhead optical cable.

[0051] Specifically, according to Brillouin backscattering theory, in Brillouin scattering, the frequency of the scattered light has a frequency shift relative to the injected light, called the Brillouin shift. Brillouin scattering is inelastic scattering, and the scattering frequency of the light is not the same as the incident frequency. The magnitude of the frequency shift is directly related to the characteristics of the phonons in the fiber material. Because the energy of optical phonons is very low, the frequency shift of Brillouin scattering is relatively small (approximately 0.086 nm at 1530 nm, 11 GHz). For Brillouin scattered light from ordinary single-mode fiber, the frequency shift is a function of temperature or strain. Therefore, by measuring the power of the backscattered Brillouin light from the injected light (i.e., the power data mentioned above) and the magnitude of the frequency shift (i.e., the frequency shift data mentioned above), the changes in temperature (i.e., the second temperature data mentioned above) and stress (i.e., the stress data mentioned above) along the fiber optic line can be accurately calculated.

[0052] like Figure 3a In the schematic diagram of scattering effects within the optical fiber, the Raman scattering signal is relatively weak, and its current sensing range is generally less than 30 km. Brillouin scattering, on the other hand, has a much greater light intensity than Raman scattering, allowing for a much longer monitoring distance. Furthermore, Brillouin scattering is sensitive to both temperature and strain, making it ideal for monitoring temperature and stress changes along long-distance optical fibers, and thus possesses significant development potential. Current technology can achieve measurements up to 100 km with high accuracy, including temperature accuracy up to 1°C and strain accuracy down to tens of micro-strains. Because Brillouin scattering is sensitive to stress and temperature, this technology utilizes this characteristic to achieve strain and temperature sensing and monitoring.

[0053] In practical applications, the intensity of spontaneously scattered Brillouin light is extremely weak, approximately two to three orders of magnitude lower than Rayleigh scattering. To expand the sensing range, the peak power of the sensing light pulse must first be increased to enhance the power of the Brillouin scattered light. However, excessively high pulse power causes nonlinear effects in stimulated Brillouin scattering, limiting the power of the probe pulse in a BOTDR to a maximum of 30 dBm for a 100 ns pulse. Therefore, it is necessary to filter and amplify the weak scattered light reflected back to effectively amplify the useful Brillouin scattered light power, thereby expanding the sensing range. Simultaneously, to achieve higher spatial resolution, an electro-optic modulator is required; however, electro-optic modulation cannot provide a sufficient extinction ratio, hindering the expansion of the sensing range.

[0054] To meet the actual needs of optical cable line condition monitoring, this application provides a distributed Brillouin scattering fiber optic sensing system suitable for overhead optical cable line condition monitoring. The system mainly includes: a seed light source (laser), a Brillouin laser, an acousto-optic modulator, an optical coupler, an erbium-doped fiber amplifier (EDFA), a circulator, a sensing fiber, a dual-balanced detector, an amplifier, a data acquisition card, and a monitoring host. The connection structure of the components of the distributed Brillouin scattering fiber optic sensing system is as follows: Figure 3b As shown:

[0055] (1) Seed light source and Brillouin laser

[0056] Distributed Brillouin scattering fiber optic sensing technology requires a very narrow linewidth for the incident seed laser source, ensuring no spectral coverage before and after the frequency shift. To guarantee a temperature measurement accuracy of 1°C, the linewidth of the seed source must be less than 1 MHz. In this system, a single-frequency fiber laser is used as the seed source, employing phosphate fiber as the gain medium and an ultrashort linear cavity structure, which significantly improves the power and frequency stability of the fiber laser. Its 20 dB linewidth is approximately 21 kHz, far less than 1 MHz. The seed source used in this system has a wavelength of 1550.12 nm, an optical power of 40 mW, and a spectral width of 1 MHz.

[0057] The Brillouin laser splits a portion of the output light from a self-developed narrow-linewidth fiber laser, injects it into the ring cavity via a circulator, and uses it as the pump light for this Brillouin laser. An erbium-doped fiber amplifier (EDFA) is connected inside the cavity as a gain module, and a 70m long nonlinear fiber is connected to generate the backscattered Brillouin signal. An isolator is connected to suppress clockwise oscillation amplification within the ring cavity, as only the backscattered Brillouin light can accumulate and oscillate in the ring cavity. An attenuator is connected to adjust the loss within the cavity to suppress the oscillation of the spontaneous emission signal within the cavity to form laser emission.

[0058] To improve the measurement accuracy of the system, it is necessary to ensure that the seed light source and the output laser of the Brillouin laser used in the system have a stable frequency; the signal-to-noise ratio of the Brillouin scattering signal should be as high as possible so that the accuracy can be higher when measuring the Brillouin frequency shift.

[0059] (2) Acousto-optic modulator

[0060] Sound waves are longitudinal mechanical stress waves, i.e., elastic waves. Due to the elastic-optical effect, when elastic waves act on an acousto-optic medium, they cause a periodic change in the density of the medium, resulting in a corresponding periodic change in the refractive index of the medium. The elastic-optical effect is related to the distribution of stress.

[0061] In BOTDR systems, due to the single-mode transmission loss of 0.20 dB / km in the sensing medium, a modulation method with a larger extinction ratio is necessary to ensure a longer and more effective sensing distance. Compared to electro-optic modulators, acousto-optic modulators have extinction ratios exceeding 45 dB, enabling greater sensing distances. However, because acousto-optic modulators have a slower adjustment rate, the narrowest optical pulses they generate are only tens of ns. To improve the spatial resolution of OTDR positioning, even narrower optical pulses are required. Therefore, using acousto-optic modulators, while ensuring sensing distance, makes it difficult to guarantee improved spatial resolution. In BOTDR systems, both electro-optic and acousto-optic modulation have their advantages and disadvantages. Electro-optic modulation can achieve higher spatial resolution, while acousto-optic modulation can achieve longer fiber optic sensing distances. Considering the more stringent requirements for sensing distance in long-distance power transmission line monitoring, this BOTDR system selects an acousto-optic modulator as the modulation device for generating optical pulses.

[0062] (3) Dual-balanced detector and (microwave) amplifier

[0063] Dual-balanced detectors are commonly used in optical coherent heterodyne detection. They consist of two matched PIN photodetectors and a differential amplifier. The output is a voltage signal proportional to the difference mode of the two input photocurrents. The dual inputs can cancel out local noise, improving the common-mode rejection ratio and thus achieving higher sensitivity. For the BOTDR system, an optical coherent heterodyne detection receiver is used. The frequency difference between the two optical paths is on the order of several hundred MHz. Therefore, the dual-balanced detector selected in the actual system has a bandwidth of 800 MHz and a noise equivalent voltage (NEP) of 20 pW / m². This satisfies the requirements of the actual system.

[0064] Since the coherent beat frequency signal from the dual-balanced detector is very weak, initially estimated to be on the order of several hundred µV, it needs to be amplified to the order of tens of mV to facilitate subsequent frequency discrimination and Brillouin signal acquisition and demodulation. Therefore, a voltage amplifier module is required, with a gain between 20 dB and 50 dB and a bandwidth of 1 GHz. The microwave amplifier selected in the actual system has a bandwidth of 2 GHz, a gain adjustable up to 40 dB, and an equivalent input noise of 43 µV.

[0065] In step S204 of the above-mentioned optical cable quality monitoring method, after obtaining multiple sets of monitoring data, the method further includes the following steps: storing multiple sets of monitoring data in a database; obtaining multiple historical monitoring data corresponding to optical cables with arbitrary laying methods from the database, and generating monitoring data curves corresponding to optical cables with arbitrary laying methods based on the multiple historical monitoring data; predicting the probability of anomalies in the monitoring data curves to obtain target probabilities; and issuing a first alarm message when the target probability is greater than a preset probability, wherein the first alarm message is used to characterize the existence of anomalies in the optical cable.

[0066] In this embodiment, the monitoring data curve can be represented as a composition of abnormal data corresponding to different collection times. It may include monitoring data curves for overhead optical cables, trench optical cables, and buried optical cables. The target probability for the monitoring data curve can be calculated by comparing the number of times abnormal data occurred for any type of optical cable (e.g., overhead optical cable) within a preset time period with the total number of optical cables monitored under that type of cable within that preset time period. For example, if the number of abnormal data occurrences for an overhead optical cable between 8:00 AM and 10:00 AM on January 1, 2000, is 10, and a total of 100 overhead optical cables were monitored during that time period, then the target probability for the monitoring data curve corresponding to that overhead optical cable is 10%. If the preset probability is set to 5%, a first alarm message is issued, indicating that there is an abnormality in the overhead optical cable. Then, the abnormal data is processed according to the specific location indicated by the abnormal data.

[0067] It should be noted that the above-mentioned methods for handling optical cables with different laying methods can all be applied using the method described above for predicting the probability of abnormal data appearing in the monitoring data curve; these methods are not listed here individually. Furthermore, the method described above for determining the target probability is only one calculation method; in real-world scenarios, other methods for predicting probabilities can also be used.

[0068] In step S206 of the above-mentioned optical cable quality monitoring method, before issuing an alarm message corresponding to the optical cable in the event of abnormal data, the method further includes the following steps: determining the abnormality level corresponding to the optical cable that generated the abnormal data, wherein the abnormality level is positively correlated with the number of times abnormal data occurs in the optical cable with the corresponding laying method; determining the display mark of the abnormal data according to the abnormality level, wherein the display mark corresponds to the abnormality level; obtaining the abnormal location corresponding to the abnormal data, and marking the abnormal location on an electronic map according to the display mark, wherein the electronic map is used to display the geographical location of the optical cable.

[0069] In this embodiment of the application, when the fault location of abnormal data is found through testing or monitoring, the coordinates of the fault point will be marked on the electronic map, and the marking will use different display marks (such as colors) according to the fault level (i.e. the above-mentioned abnormal level).

[0070] In the above steps, determining the anomaly level corresponding to the optical cable that generated abnormal data specifically includes the following steps: obtaining the number of times the optical cable of the target laying method generated abnormal data within a preset time period, and the abnormal time corresponding to the abnormal data, wherein the optical cable of the target laying method is any one of trench optical cable, underground optical cable, and overhead optical cable; determining the time difference of each adjacent abnormal time from the abnormal data, and recording it as the first time; if the sum of the first times is less than the preset time, updating the anomaly level of the optical cable that generated abnormal data from the first level to the second level, wherein the severity of the second level is higher than the severity of the first level.

[0071] In this embodiment, the optical cable with the target laying method is first obtained, for example, one can be selected from overhead optical cable, buried optical cable, and trench optical cable as the target optical cable, and then the anomaly level of the target optical cable is determined. After selecting the target optical cable, all abnormal data of the target optical cable within a preset time period are obtained, and the abnormal time corresponding to the abnormal data is also obtained. By calculating the time difference between adjacent abnormal times, multiple first times are obtained. The multiple first times are summed to obtain the total abnormal time. When the total abnormal time is less than the preset time, it indicates that the target optical cable generates abnormal data more frequently within the preset time period. Therefore, the anomaly level of the target optical cable is modified from the first level to the second level, and the severity of the second level is higher than that of the first level.

[0072] In step S206 of the above-mentioned optical cable quality monitoring method, an alarm message corresponding to the optical cable is issued when abnormal data exists. Specifically, the steps include: dividing the optical cables in different areas to determine the range information corresponding to the optical cables; determining the target range information corresponding to the abnormal data; and determining the target alarm information corresponding to the alarm level based on the alarm level corresponding to the target range information.

[0073] In this embodiment of the application, since optical cables can be laid all over the country, the environment in different regions is different, which leads to certain deviations in the operation of optical cables in different regions. By dividing the optical cables according to the regional range, the alarm level corresponding to the optical cables in different regions can be determined. For example, the alarm level corresponding to the region with a harsh environment is higher than the alarm level corresponding to the region with a good environment, and the alarm information corresponding to different alarm levels is different.

[0074] In this embodiment, the operating status of the optical cable can be monitored through the corresponding software. The overall system software user interface should be designed according to user habits and the various functions should be modularized. Each module is independent to prevent it from being affected by other modules during upgrades and feature additions. To ensure system data security, a system backup function should be established, and backup data should be securely managed. The software architecture is divided into three layers. The first layer mainly implements signal test data acquisition, including signal attenuation data obtained from OTDR testing and optical power monitoring data. After preliminary data processing, the data is sent to the monitoring center. The second layer is the data processing layer, located in the monitoring center server. Its specific function is to comprehensively process the received data, derive the fault line test results, and issue alarms based on the results. The third layer is the application layer, whose specific function is to display the final monitoring results to the user through a monitor, including data analysis curves, fault location, alarm applications, and other daily system maintenance tools. The main characteristics of the system software are: a relatively simple operating interface, low system maintenance difficulty, clear distinction between functional modules, and ease of function upgrades. Meanwhile, to prevent system errors from affecting normal operation, a self-testing and reset function should be provided to reduce system vulnerabilities. The most crucial part of the entire system is the data processing layer, which utilizes database and network communication technologies to perform the most important functions such as data analysis and personnel scheduling.

[0075] The software employs a three-tier architecture, each layer possessing its own specific functions, which are combined to achieve real-time monitoring of optical cables. The data acquisition layer, the core of the monitoring station, resides on the main control module. It controls other functional modules, collects test data, sends real-time test results to the higher-level monitoring center, and stores system data. Specific functions include: collecting optical power data generated by the test modules, determining if the data exceeds limits, and issuing alarms if so; transmitting monitoring data to the higher-level monitoring center, being controlled by the monitoring center, performing relevant OTDR tests according to the testing instructions issued by the monitoring center, and analyzing the test results; recording all system operations in the communication system operation log for easy future retrieval; and having an automatic restart function for software malfunctions to ensure stable system operation. The data processing layer, primarily located on the monitoring center server, enables data exchange between the monitoring center and the monitoring station. It utilizes the server to store system data, while users can access and query database data through client programs.

[0076] The application layer typically resides on the monitoring center client side, facilitating system operation for system administrators and users. Its functions include: fiber optic line testing, fault location, test data analysis, alarm functions, and various external interfaces. Fiber optic line testing employs optical power monitoring and OTDR testing. Optical power monitoring is a real-time monitoring method that primarily monitors changes in optical power within the fiber. If the change exceeds the system's set limit, a system alarm will be triggered. OTDR testing monitors signal attenuation within the fiber, establishing a reference curve to determine the fiber length and fault location. Fault location utilizes the existing Global Positioning System (GPS) in conjunction with the test curve. A specific calculation formula is used to determine the precise location of the fiber optic cable fault. Test data analysis involves creating intuitive analytical curves from the test data to facilitate fault location. The alarm function sends alarm information to maintenance personnel via telephone, SMS, and web notifications. Various external interface functions enable data exchange with other systems and the sending of alarm information to them.

[0077] The monitoring center is structurally composed of a data server, a positioning server, data interfaces, a maintenance workstation, and other functional modules. It sets multi-level limits for optical power variations to categorize fault conditions into different levels. OTDR testing can employ targeted testing and periodic testing methods, with results saved as historical analysis data. Data communication between the monitoring center and monitoring stations is managed using a large network database, which automatically configures station routing information, ensuring normal network communication even if station structures change. The monitoring center also manages logs and reports monitoring data statistically. Technically, it utilizes database software for system error correction, automatically restarting and restoring the system to a correct operating state in the event of a system failure, ensuring stable system operation.

[0078] The monitoring center software testing process follows a specific procedure. First, test parameters are set in the system, including determining the fiber optic cable lines in the area to be tested, the monitoring cycle, and the test time. After testing, the results are compiled and summarized, and the data stored in the database is compared with the test data to obtain the final test results. Finally, the test results are logged and printed for reporting.

[0079] In the system software, users can perform testing functions by setting system parameters, enabling the system to automatically test fiber optic cable lines. Methods include spot testing and periodic testing. The test results are compared with normal operating status data stored on the server to identify the cause and specific location of faults. The fiber optic cable automatic monitoring system consists of six functional modules: fiber optic cable topology module, test data curve module, fault location module, data processing module, report generation module, and fault alarm module. The specific module composition is described in [details omitted]. Figure 3c As shown.

[0080] exist Figure 3c In this system, the fiber optic cable monitoring system interacts with the server. This interaction includes data reporting and downloading. The server analyzes the received data and determines whether to issue an alarm call. If an alarm call is initiated, a notification message is sent to the fiber optic cable automatic monitoring main page. Data exchange occurs between the main page, the server, and the database server. The main page includes several modules: geographic information, fiber optic cable topology, data management, curve analysis, data reporting, and fault handling. All these modules require data to be read from the database server for processing. The following provides a detailed introduction and explanation of each module.

[0081] The geographic information module's primary function is to locate fiber optic cable lines using an electronic map, while also providing query and alarm functions. An electronic map was chosen for this purpose because it offers a relatively three-dimensional representation of geographic information and features zoom in and out, allowing users to intuitively understand the cable's geographical location. When a fault location is detected during testing, its coordinates are marked on the electronic map, with different colors indicating the fault level. The fiber optic topology module clearly displays the entire monitoring system's line status, including the location, operating status, and data values ​​of the lowest-level data acquisition units, as well as the connection lines and routes between monitoring stations. When a fault occurs in the fiber optic cable line, the system issues an alarm, displaying different levels of alarm information on the topology module. By viewing the alarm information on the topology module, users can clearly understand which communication line is experiencing a fault, facilitating the monitoring center's allocation of maintenance resources.

[0082] The data management module allows for the modification, deletion, and addition of data. It primarily utilizes database principles to manage existing data. The curve analysis module mainly analyzes and processes OTDR test data from the automatic optical cable monitoring system. It analyzes the obtained test data, calculates the location of the fault point and the signal attenuation at each line connection point based on the fiber length using specific formulas, and then constructs a curve according to certain specifications. By comparing this curve with the normal operating curve, the specific cause of the optical fiber fault and the geographical coordinates of the fault point can be determined. The fault handling module is mainly used to issue alarms for optical cable faults. The system first processes all suspected alarm information, eliminating false alarms and misleading information, and then verifies other information. It tests the alarm line, compares and analyzes the test data, and if the final test results indicate fiber damage, it sends this alarm information to the monitoring center.

[0083] The data reporting module manages all fiber optic communication network equipment and the data generated by these devices within the monitoring range. It employs a hierarchical management approach, with the test center server's physical layer managing the fiber optic cable lines of lower-level monitoring centers and stations. Functionally, the data reporting module consists of two modules: a fault management module and a data management module. The fault management module primarily collects fault data and generates fault data reports. These reports can summarize fiber optic cable fault data occurring in a region within a specific period, including fault time, number of fault points, alarm information, and the number of faulty fiber optic cables. Alarm information includes the number of alarms, the number of false alarms, and their handling status. It also collects statistics on user operation information and generates reports. The data management module collects statistics on other system business information, including fault repair statistics and maintenance personnel dispatch data.

[0084] This application embodiment comprehensively monitors the operational quality of optical cables, including monitoring for external damage to buried optical cables and monitoring water and fire conditions in optical cables within trenches. The monitoring system is relatively complete and integrates multiple monitoring systems, saving server resources, improving equipment utilization, and further enhancing operation and maintenance monitoring efficiency.

[0085] Figure 4 This is a structural diagram of an optical cable quality monitoring device according to an embodiment of this application, such as... Figure 4 As shown, the device includes:

[0086] The acquisition module 402 is used to acquire multiple monitoring data returned by multiple sensing systems. Each sensing system is set on the optical cable with the corresponding laying method according to the type of sensing system. The optical cables are laid in the following ways: trench optical cable, underground optical cable and overhead optical cable. Each type of sensing system is used to detect optical cables with one laying method.

[0087] Grouping module 404 is used to group multiple monitoring data according to the type of sensing system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring the optical cable of the corresponding laying method.

[0088] The alarm module 406 is used to determine whether there is abnormal data in each set of monitoring data according to the preset conditions corresponding to optical cables with different laying methods, and to issue alarm information corresponding to the optical cable if there is abnormal data. The preset conditions are used to determine whether there is abnormality in the quality of the optical cable with the corresponding laying method.

[0089] In the acquisition module of the aforementioned optical cable quality monitoring device, multiple sets of monitoring data include first monitoring data, which is collected by the sensing system on the optical cable in the trench. Acquiring multiple monitoring data returned by multiple sensing systems specifically includes the following process: acquiring the first temperature data, the transmission rate of the optical signal in the optical cable, and the echo time collected by the sensing system on the optical cable in the trench; determining the location information corresponding to the first temperature data based on the transmission rate and echo time; and determining at least the first temperature data and the location information corresponding to the first temperature data as the first monitoring data.

[0090] In the acquisition module of the aforementioned optical cable quality monitoring device, multiple sets of monitoring data include second monitoring data, which is collected by the sensing system on the buried optical cable. Acquiring multiple monitoring data returned by multiple sensing systems specifically includes the following process: acquiring test data and reference data collected by the sensing system on the buried optical cable, wherein the test data and reference data are light data obtained after the light emitted by the light-emitting module in the sensing system on the buried optical cable passes through a coupler; the test data carries vibration information at different locations on the buried optical cable, and the reference data is control data generated simultaneously with the test data that does not carry vibration information; displaying the test data and reference data corresponding to different times to obtain a waveform diagram; and determining the data information in the waveform diagram as the second monitoring data.

[0091] In the acquisition module of the aforementioned optical cable quality monitoring device, multiple sets of monitoring data include third monitoring data, which is collected by the sensing system on the overhead optical cable. Acquiring multiple monitoring data returned by multiple sensing systems specifically includes the following process: acquiring the power data and frequency shift data of light at different locations collected by the sensing system on the overhead optical cable; determining the second temperature data and stress data of the overhead optical cable based on the power data and frequency shift data; and determining the second temperature data and stress data as the third monitoring data.

[0092] In the aforementioned optical cable quality monitoring device, after obtaining multiple sets of monitoring data, the grouping module is also used to store the multiple sets of monitoring data in a database; retrieve multiple historical monitoring data corresponding to optical cables with arbitrary laying methods from the database, and generate monitoring data curves corresponding to optical cables with arbitrary laying methods based on the multiple historical monitoring data; predict the probability of anomalies in the monitoring data curves to obtain target probabilities; and issue a first alarm message when the target probability is greater than a preset probability, wherein the first alarm message is used to characterize the presence of anomalies in the optical cable.

[0093] In the alarm module of the aforementioned optical cable quality monitoring device, before issuing an alarm message corresponding to the optical cable in the presence of abnormal data, the alarm module is also used to determine the abnormality level of the optical cable that generated the abnormal data, wherein the abnormality level is positively correlated with the number of times abnormal data occurs in the optical cable with the corresponding laying method; based on the abnormality level, determine the display mark of the abnormal data, wherein the display mark corresponds to the abnormality level; obtain the abnormal location corresponding to the abnormal data, and mark the abnormal location on an electronic map based on the display mark, wherein the electronic map is used to display the geographical location of the optical cable.

[0094] In the alarm module of the aforementioned optical cable quality monitoring device, determining the abnormality level corresponding to the optical cable that generates abnormal data specifically includes the following process: obtaining the number of times the optical cable of the target laying method generates abnormal data within a preset time period, and the abnormal time corresponding to the abnormal data, wherein the optical cable of the target laying method is any one of trench optical cable, underground optical cable, and overhead optical cable; determining the time difference of each adjacent abnormal time from the abnormal data, and recording it as the first time; if the sum of the first times is less than the preset time, updating the abnormality level of the optical cable that generates abnormal data from the first level to the second level, wherein the severity of the second level is higher than the severity of the first level.

[0095] In the alarm module of the aforementioned optical cable quality monitoring device, an alarm message corresponding to the optical cable is issued when abnormal data is present. The specific process includes the following steps: dividing the optical cables into different areas to determine the range information corresponding to the optical cables; determining the target range information corresponding to the abnormal data; and determining the target alarm message corresponding to the alarm level based on the alarm level corresponding to the target range information.

[0096] It should be noted that, Figure 4 The optical cable quality monitoring device shown is used to perform... Figure 2 The above-described method for monitoring the quality of optical cables also applies to the monitoring device for the quality of optical cables, and will not be repeated here.

[0097] This application embodiment also provides a non-volatile storage medium, which includes a stored computer program. The device containing the non-volatile storage medium executes the following method for monitoring optical cable quality by running the computer program: acquiring multiple monitoring data returned by multiple sensor systems, wherein each sensor system is installed on an optical cable of a corresponding laying method according to its type. The optical cables, according to their laying methods, include: trench optical cables, buried optical cables, and overhead optical cables. Each type of sensor system is used to detect optical cables of one laying method. The multiple monitoring data are grouped according to the type of sensor system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring an optical cable of a corresponding laying method. Based on preset conditions corresponding to optical cables of different laying methods, it is determined whether there is abnormal data in each set of monitoring data, and if abnormal data is found, an alarm message corresponding to the optical cable is issued. The preset conditions are used to determine whether there is an abnormality in the quality of the optical cable of the corresponding laying method.

[0098] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0099] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0101] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0102] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0103] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0104] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for monitoring the quality of optical cables, characterized in that, include: Multiple monitoring data returned by multiple sensing systems are acquired. Each sensing system is installed on an optical cable with a corresponding laying method according to its type. The laying methods of the optical cable include: trench optical cable, underground optical cable and overhead optical cable. Each type of sensing system is used to detect optical cables with one laying method. The multiple monitoring data are grouped according to the type of the sensing system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring the optical cable of the corresponding laying method. According to preset conditions corresponding to optical cables with different laying methods, it is determined whether there is abnormal data in each group of monitoring data, and if there is abnormal data, an alarm message corresponding to the optical cable is issued. The preset conditions are used to determine whether there is an abnormality in the quality of the optical cable with the corresponding laying method.

2. The method according to claim 1, characterized in that, The multiple sets of monitoring data include first monitoring data, wherein the first monitoring data is collected by the sensing system on the optical cable in the trench; acquiring multiple monitoring data returned by multiple sensing systems includes: The system acquires the first temperature data, the transmission rate of the optical signal in the optical cable, and the echo time collected by the sensing system on the optical cable. Based on the transmission rate and the echo time, determine the location information corresponding to the first temperature data; At least the first temperature data and the location information corresponding to the first temperature data are determined as the first monitoring data.

3. The method according to claim 1, characterized in that, The multiple sets of monitoring data include second monitoring data, wherein the second monitoring data is collected by the sensing system on the buried optical cable; acquiring multiple monitoring data returned by multiple sensing systems includes: The test data and reference data collected by the sensing system on the buried optical cable are obtained. The test data and reference data are light data obtained after the light emitted by the light-emitting module in the sensing system on the buried optical cable passes through the coupler. The test data carries vibration information at different locations of the buried optical cable, and the reference data is control data that does not carry the vibration information and is generated at the same time as the test data. Display the test data and reference data at different times to obtain the waveform diagram; The data information in the waveform diagram is determined as the second monitoring data.

4. The method according to claim 1, characterized in that, The multiple sets of monitoring data include third monitoring data, which is collected by the sensing system on the overhead optical cable; acquiring multiple monitoring data returned by multiple sensing systems includes: The power and frequency shift data of light at different locations are acquired by the sensing system on the overhead optical cable. Based on the power data and frequency shift data of the light, the second temperature data and stress data of the overhead optical cable are determined; The second temperature data and the stress data are determined as the third monitoring data.

5. The method according to claim 1, characterized in that, After obtaining multiple sets of monitoring data, the method further includes: The multiple sets of monitoring data are stored in a database; Obtain multiple historical monitoring data corresponding to optical cables with arbitrary laying methods from the database, and generate monitoring data curves corresponding to optical cables with arbitrary laying methods based on the multiple historical monitoring data; The probability of an anomaly occurring in the monitored data curve is predicted to obtain the target probability; If the target probability is greater than a preset probability, a first alarm message is issued, wherein the first alarm message is used to indicate that there is an anomaly in the optical cable.

6. The method according to claim 1, characterized in that, Before issuing an alarm message corresponding to the optical cable in the presence of the abnormal data, the method further includes: Determine the anomaly level corresponding to the optical cable that generated the abnormal data, wherein the anomaly level is positively correlated with the number of times abnormal data occurs in the optical cable with the corresponding laying method; Based on the anomaly level, a display marker for the abnormal data is determined, wherein the display marker corresponds to the anomaly level; Obtain the abnormal location corresponding to the abnormal data, and mark the abnormal location on the electronic map according to the display marker, wherein the electronic map is used to display the geographical location of the optical cable.

7. The method according to claim 6, characterized in that, Determining the anomaly level corresponding to the optical cable that generated the abnormal data includes: The number of abnormal data generated by the optical cable of the target laying method within a preset time period is obtained, as well as the abnormal time corresponding to the abnormal data, wherein the optical cable of the target laying method is any one of the trench optical cable, the buried optical cable and the overhead optical cable; The time difference between each adjacent abnormal time is determined from the abnormal data and denoted as the first time. If the sum of the first time intervals is less than a preset time interval, the anomaly level of the optical cable that generated the abnormal data will be updated from the first level to the second level, wherein the severity of the second level is higher than that of the first level.

8. The method according to claim 1, characterized in that, In the event of the aforementioned abnormal data, an alarm message corresponding to the optical cable will be issued, including: The optical cables in different regions are divided to determine the range information corresponding to the optical cables; Determine the target range information corresponding to the abnormal data; Based on the alarm level corresponding to the target range information, determine the target alarm information corresponding to the alarm level.

9. A device for monitoring the quality of optical cables, characterized in that, include: The acquisition module is used to acquire multiple monitoring data returned by multiple sensing systems. Each sensing system is installed on the optical cable with a corresponding laying method according to the type of the sensing system. The laying methods of the optical cable include: trench optical cable, underground optical cable and overhead optical cable. Each type of sensing system is used to detect optical cables with one laying method. The grouping module is used to group the multiple monitoring data according to the type of the sensing system to obtain multiple groups of monitoring data, wherein each group of monitoring data is obtained by monitoring the optical cable of the corresponding laying method. The alarm module is used to determine whether there is abnormal data in each set of monitoring data according to preset conditions corresponding to optical cables with different laying methods, and to issue alarm information corresponding to the optical cable if the abnormal data is present. The preset conditions are used to determine whether there is an abnormality in the quality of the optical cable with the corresponding laying method.

10. An electronic device, characterized in that, include: Memory, used to store program instructions; A processor, connected to the memory, is configured to execute program instructions to perform the following functions: acquiring multiple monitoring data returned by multiple sensor systems, wherein each sensor system is installed on an optical cable with a corresponding laying method according to its type, the optical cable laying methods including: trench optical cable, underground optical cable, and overhead optical cable, and each type of sensor system is used to detect optical cables with one laying method; grouping the multiple monitoring data according to the type of sensor system to obtain multiple sets of monitoring data, wherein each set of monitoring data is obtained by monitoring an optical cable with a corresponding laying method; determining whether there is abnormal data in each set of monitoring data according to preset conditions corresponding to optical cables with different laying methods, and issuing an alarm message corresponding to the optical cable if the abnormal data is found, wherein the preset conditions are used to determine whether there is an abnormality in the quality of the optical cable with the corresponding laying method.

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