A communication optical cable operation status early warning system based on optical cable junction box

Abstract

The present invention relates to the field of optical cable early warning technology, and specifically discloses a communication optical cable operation status early warning system based on an optical cable junction box, comprising a management module, which sets the interval time for the next status detection of each detection item according to the risk system of each detection item obtained by a risk analysis module, and controls the detection modules at both ends of the optical cable to perform a first verification test and a second verification test respectively after the interval time ends; the verification module obtains the verification coefficient of the detection section according to the first verification test and the second verification test, and obtains the judgment result according to the verification coefficient. The present invention can verify the data reported by each detection section, so as to judge whether the current detection section is affected by other risky detection sections. According to the judgment result, early warning can be better performed, the number of false alarms can be reduced, and the false alarm rate can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable early warning, and in particular to an early warning system for the operation status of a communication optical cable based on an optical cable junction box. Background Art

[0002] The main application scenario of communication optical cable operation status warning is to remind and warn the cable when it is subjected to external impact and its own state changes drastically, which is convenient for timely maintenance and helps to avoid greater danger.

[0003] The current optical cable early warning technology usually uses a regular detection method to evaluate the status of the optical cable, such as the Chinese invention patent with publication number CN 107452177 B, which includes a detection optical fiber connected to an underground optical cable, an overhead optical cable, an optical cable well and an optical cable junction box. The detection optical fiber is connected to an optical fiber stress detection unit, an optical fiber temperature detection unit and an optical fiber vibration detection unit. The communication optical cable safety early warning system can continuously and in real time detect the stress and pressure on the optical fiber in the optical path, the vibration near the optical fiber, and the external intrusion of the optical cable well and the optical cable junction box to prevent the communication optical cable from being damaged.

[0004] The problem is that this warning method is based on adjusting the detection time interval, and is prone to false alarms in many situations. For example, on an optical cable with more risk reporting locations, the risk report at a certain location may be caused by other risk locations. The existing warning method based on adjusting the detection time interval is unable to identify a variety of unexpected situations. In view of this, the present invention proposes a communication optical cable operation status warning system based on an optical cable junction box, which can reduce the number of false alarms in the optical cable warning process and improve the accuracy of the warning. Summary of the invention

[0005] The purpose of the present invention is to provide a communication optical cable operation status early warning system based on an optical cable junction box to solve the following technical problems:

[0006] How to reduce the number of false alarms in the optical cable warning process and improve the accuracy of the warning.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A communication optical cable operation status early warning system based on an optical cable junction box, comprising:

[0009] Detection module, risk analysis module, management module, verification module and early warning module,

[0010] The detection module is arranged in the optical cable detection box and performs periodic status detection on the optical cable connected thereto;

[0011] The risk analysis module is configured to divide the optical cable into several detection sections for analysis based on state detection, obtain the risk coefficient of each detection item in each detection section, and correspondingly, the risk coefficient of each detection item includes a vibration detection risk coefficient, a temperature detection risk coefficient and a stress detection risk coefficient, and obtain the number and location of the detection sections with risks of the optical cable, and the risk means that the risk coefficient or the variation of each detection item exceeds the corresponding preset value;

[0012] The management module sets the interval time for the next status detection of each detection item according to the risk coefficient of each detection item obtained by the risk analysis module, and controls the detection modules at both ends of the optical cable to perform the first verification detection and the second verification detection respectively after the interval time ends. The first verification detection and the second verification detection are status detections initiated from the left and right ends of the optical cable respectively.

[0013] The verification module obtains a verification coefficient of the detection section according to the first verification test and the second verification test, and obtains a judgment result according to the verification coefficient, wherein the judgment result includes whether the current detection section is affected by other detection sections with risks;

[0014] The early warning module issues an early warning based on the judgment result.

[0015] Through the above technical solution: a verification process is provided when an optical cable divided into several detection sections reports that some detection sections are at risk. The data reported by each detection section can be verified to determine whether the current detection section is affected by other risky detection sections. Based on the judgment result, better early warning can be carried out, the number of false alarms can be reduced, and the false alarm rate can be effectively reduced.

[0016] As a further technical solution of the present invention: the process of obtaining the verification coefficient of the detection section includes:

[0017] The optical cable has a total of m detection sections. For the i-th detection section,

[0018] By formula:

[0019]

[0020] Get the verification coefficient Ve i , where n is the total number of state detection items, usually including vibration detection, temperature detection and stress detection, j∈n, σ j is the correction coefficient of the jth test item. The correction coefficient is a preset value and is related to the conduction loss rate of the optical fiber. is the risk factor of the jth test item obtained by the first verification test, is the risk factor of the jth test item obtained by the second verification test, X0 It is the preset standard value.

[0021] As a further technical solution of the present invention: the process of obtaining the judgment result includes:

[0022] The verification coefficient Ve of the i-th detection section i With the corresponding comparison value V i Make comparisons;

[0023] If Ve i >V i , then the judgment result is that the current detection section is affected by other risky detection sections during the detection process;

[0024] If Ve i ≤V i , the judgment result is that the current detection section is not affected by other risky detection sections during the detection process.

[0025] Through the above technical solution: a process of obtaining a verification coefficient and obtaining a judgment result based on the verification coefficient is provided. The verification coefficient is obtained based on a first verification test and a second verification test in different detection directions. The greater the data gap between the first verification test and the second verification test, the greater the verification coefficient, which means that the current detection section is more affected by other risky detection sections during the detection process, thereby achieving digitized acquisition of judgment results and improving detection efficiency.

[0026] As a further technical solution of the present invention: comparison value V i The acquisition process includes:

[0027] By formula:

[0028]

[0029] Get the comparison value V i , where L is the length of the optical fiber in the optical cable, d1 is the distance between the first verification test initiation position and the i-th detection section, d2 is the distance between the second verification test initiation position and the i-th detection section, P1 is the input power of the optical fiber in the optical cable, P2 is the output power of the optical fiber in the optical cable, and R is a preset conversion function, preferably a reference table function.

[0030] As a further technical solution of the present invention, the process of the early warning module issuing an early warning according to the judgment result includes:

[0031] On the i-th detection section;

[0032] If the judgment result is that the current detection section is not affected by other detection sections with risks during the detection process, it is determined whether to issue an early warning based on the risk coefficient of each detection item generated by the status detection;

[0033] If the judgment result is that the current detection section is affected by other risky detection sections during the detection process, the selection coefficients of the first verification test and the second verification test are obtained respectively, and the optimal detection direction of the i-th detection section is selected from the first verification test and the second verification test by the selection coefficients, and whether to issue an early warning is determined based on the risk coefficients of each detection item generated by the optimal detection direction.

[0034] As a further technical solution of the present invention: the process of obtaining the selection coefficient includes:

[0035] By formula:

[0036]

[0037] Get the selection coefficient Se k ,in and are the preset first weight coefficient and the second weight coefficient, k takes the values ​​of 1 and 2, n1 is the count value of the current detection segment when counting all the detection segments reported as having risks along the detection direction of the first verification detection, n2 is the count value of the current detection segment when counting all the detection segments reported as having risks along the detection direction of the second verification detection, is to obtain n k The number of risky detection sections reported during the process, f is the preset normalization function, g1 is related to n k Negative correlation table function, g2 is related to Negative correlation lookup table function.

[0038] As a further technical solution of the present invention: the process of selecting the optimal detection direction includes:

[0039] Compare the values ​​of Se1 and Se2 of the i-th detection section;

[0040] The detection direction corresponding to the larger value of Se1 and Se2 is selected as the optimal detection direction.

[0041] Through the above technical solution: in this embodiment, a process for obtaining the optimal detection direction is provided, that is, for different detection sections, different optimal detection directions can be obtained. Among the two different detection directions, the result of the state detection obtained by the optimal detection direction is the one that has the smallest difference from the actual situation. If a single detection direction is selected, false alarms will occur in some cases. Therefore, screening by the optimal detection direction can reduce the number of false alarms and effectively avoid missed alarms.

[0042] As a further technical solution of the present invention: the detection module includes an optical cable junction box state detection unit, and the optical cable junction box state detection unit is used to detect the open or closed state of the cabinet door of the optical cable junction box.

[0043] As a further technical solution of the present invention: the items of the state detection include vibration detection, temperature detection and stress detection, each detection item has an independent detection cycle, and the detection cycle of the detection item is adjusted according to the risk coefficient obtained in the previous detection.

[0044] Beneficial effects of the present invention:

[0045] (1) The present invention can verify the data reported by each detection section, so as to determine whether the current detection section is affected by other risky detection sections. Based on the judgment result, better early warning can be carried out, the number of false alarms can be reduced, and the false alarm rate can be effectively reduced.

[0046] (2) The verification coefficient of the present invention is obtained based on the first verification test and the second verification test in different detection directions. The greater the data gap between the first verification test and the second verification test, the greater the verification coefficient, which means that the current detection section is more affected by other risky detection sections during the detection process. This enables the digital acquisition of judgment results and improves detection efficiency.

[0047] (3) The present invention obtains different optimal detection directions for different detection sections. The result of the state detection obtained by the optimal detection direction has the smallest difference with the actual situation. The screening of the optimal detection direction can reduce the number of false alarms and effectively avoid missed alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] Figure 1 It is a schematic diagram of the overall composition of each module of the present invention;

[0050] Figure 2 It is a schematic diagram of the internal composition of the detection module of the present invention. DETAILED DESCRIPTION

[0051] 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.

[0052] See also Figure 1-Figure 2As shown, in one embodiment, a communication optical cable operation status early warning system based on an optical cable junction box is provided, comprising:

[0053] Detection module, risk analysis module, management module, verification module and early warning module,

[0054] The detection module is arranged in the optical cable detection box, and performs periodic status detection on the optical cable connected thereto. The status detection items include vibration detection, temperature detection and stress detection, and each detection item has an independent detection cycle;

[0055] All three types of detection are performed by emitting light pulses. Taking stress detection as an example, the detection module actively emits light pulses and uses the optical fiber Brillouin backscattering principle to realize strain detection of the sensing optical fiber. Similar principles can realize vibration detection and temperature detection. The details are not described in detail. It should be noted that since all active detection is performed by emitting light pulses, the emission direction of the light pulses will affect the detection results. The present invention can provide a process for selecting the emission direction of the light pulses, thereby optimizing the three detection processes and reducing the false alarm rate.

[0056] The risk analysis module is set to divide the optical cable into several detection sections for analysis based on state detection, and obtain the risk coefficient of each detection item in each detection section. Correspondingly, the risk coefficient of each detection item includes a vibration detection risk coefficient, a temperature detection risk coefficient and a stress detection risk coefficient, and obtain the number and location of the detection sections with risks of the optical cable. Risk means that the risk coefficient of each detection item or the amount of change exceeds the corresponding preset value. In addition, the value of the risk coefficient of each detection item is preferably a continuous numerical interval. If it is set to a natural number interval, the more natural numbers contained in the natural number interval, the better the final result;

[0057] The management module sets the interval time for the next status detection of each detection item according to the risk coefficient of each detection item obtained by the risk analysis module, and controls the detection modules at both ends of the optical cable to perform the first verification detection and the second verification detection respectively after the interval time ends. The first verification detection and the second verification detection are status detections initiated from the left and right ends of the optical cable respectively. The detection cycle of the detection item is adjusted according to the risk coefficient obtained in the previous detection, that is, in the case of a reported danger, the higher the risk coefficient corresponding to the status detection item, the shorter the set interval time;

[0058] The verification module obtains a verification coefficient of the detection section according to the first verification test and the second verification test, and obtains a judgment result according to the verification coefficient, wherein the judgment result includes whether the current detection section is affected by other detection sections with risks;

[0059] The early warning module issues an early warning based on the judgment results.

[0060] In this embodiment, a verification process is provided when an optical cable divided into several detection sections reports that some detection sections are at risk. The data reported by each detection section can be verified to determine whether the current detection section is affected by other risky detection sections. Based on the judgment result, better early warning can be carried out, the number of false alarms can be reduced, and the false alarm rate can be effectively reduced.

[0061] The process of obtaining the validation coefficient for the detection segment includes:

[0062] The optical cable has a total of m detection sections. For the i-th detection section,

[0063] By formula:

[0064]

[0065] Get the verification coefficient Ve i , where n is the total number of state detection items, usually including vibration detection, temperature detection and stress detection, j∈n, σ j is the correction coefficient of the jth test item. The correction coefficient is a preset value and is related to the conduction loss rate of the optical fiber. is the risk factor of the jth test item obtained by the first verification test, is the risk factor of the jth test item obtained by the second verification test, X 0 It is the preset standard value.

[0066] The process of obtaining the judgment result includes:

[0067] The verification coefficient Ve of the i-th detection section i With the corresponding comparison value V i Make comparisons;

[0068] If Ve i >V i , then the judgment result is that the current detection section is affected by other risky detection sections during the detection process;

[0069] If Ve i ≤V i , the judgment result is that the current detection section is not affected by other risky detection sections during the detection process.

[0070] In this embodiment, a process of obtaining a verification coefficient and obtaining a judgment result based on the verification coefficient is provided. The verification coefficient is obtained based on a first verification test and a second verification test in different detection directions. The greater the data gap between the first verification test and the second verification test, the greater the verification coefficient, which means that the current detection section is more affected by other risky detection sections during the detection process. This enables the acquisition of judgment results in a digitized manner and improves detection efficiency.

[0071] Comparison value V i The acquisition process includes:

[0072] By formula:

[0073]

[0074] Get the comparison value V i , where L is the length of the optical fiber in the optical cable, d1 is the distance between the first verification test initiation position and the i-th detection section, d2 is the distance between the second verification test initiation position and the i-th detection section, P1 is the input power of the optical fiber in the optical cable, P2 is the output power of the optical fiber in the optical cable, and R is a preset conversion function, preferably a reference table function.

[0075] The process of the early warning module issuing an early warning based on the judgment results includes:

[0076] On the i-th detection section;

[0077] If the judgment result is that the current detection section is not affected by other detection sections with risks during the detection process, it is determined whether to issue an early warning based on the risk coefficient of each detection item generated by the status detection;

[0078] If the judgment result is that the current detection section is affected by other risky detection sections during the detection process, the selection coefficients of the first verification test and the second verification test are respectively obtained, and the optimal detection direction of the i-th detection section is selected from the first verification test and the second verification test by the selection coefficients. The risk coefficients of each detection item generated by the optimal detection direction are used to determine whether to issue an early warning. In other words, the selection of the optimal detection direction may need to be adjusted and optimized according to the specific situation.

[0079] The process of obtaining the selection coefficient includes:

[0080] By formula:

[0081]

[0082] Get the selection coefficient Se k ,in and are the preset first weight coefficient and the second weight coefficient, k takes the values ​​of 1 and 2, n1 is the count value of the current detection segment when counting all the detection segments reported as having risks along the detection direction of the first verification detection, n2 is the count value of the current detection segment when counting all the detection segments reported as having risks along the detection direction of the second verification detection, is to obtain n k The number of risky detection sections reported during the process, f is the preset normalization function, g1 is related to n k Negative correlation table function, g2 is related to Negative correlation lookup table function.

[0083] The process of selecting the optimal detection direction includes:

[0084] Compare the values ​​of Se1 and Se2 of the i-th detection section;

[0085] The detection direction corresponding to the larger value of Se1 and Se2 is selected as the optimal detection direction.

[0086] In this embodiment, a process for obtaining the optimal detection direction is provided, that is, different optimal detection directions can be obtained for different detection sections. Among two different detection directions, the result of the state detection obtained by the optimal detection direction is the one that has the smallest difference from the actual situation. If a single detection direction is selected, false alarms will occur in some cases. Therefore, screening of the optimal detection direction can reduce the number of false alarms and effectively avoid missed alarms.

[0087] The detection module includes a cable junction box state detection unit, which is used to detect the opening and closing state of the door of the cable junction box; the cable junction box state detection unit is usually composed of a sensor, a signal processor and a connector. The module is installed inside the cable junction box and monitors the opening and closing of the door through the sensor.

[0088] When the door of the optical cable junction box is opened or closed, the sensor detects the corresponding state change and transmits the signal to the signal processor. The signal processor processes and analyzes the sensor signal and then transmits the result to other systems or devices, such as a monitoring system or an alarm device. The optical cable junction box state detection unit can realize real-time monitoring and control of the state of the optical cable junction box door. The safety and reliability of the optical cable junction box can be ensured. In addition, the optical cable junction box state detection unit can also be integrated with other devices or systems to realize automatic control or remote monitoring functions. For example, it can be integrated with a monitoring system to send an alarm or trigger corresponding emergency measures when the door is in an abnormal state.

[0089] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A communication optical cable operation status early warning system based on an optical cable junction box, comprising a detection module, a risk analysis module, a management module, a verification module and an early warning module, characterized in that: The detection module is arranged in the optical cable detection box and performs periodic status detection on the optical cable connected thereto; The risk analysis module is configured to divide the optical cable into several detection sections for analysis based on state detection, obtain the risk coefficient of each detection item in each detection section, and obtain the number and location of the detection sections with risks in the optical cable; The management module sets the interval time for the next status detection of each detection item according to the risk coefficient of each detection item obtained by the risk analysis module, and controls the detection modules at both ends of the optical cable to perform the first verification detection and the second verification detection respectively after the interval time ends; The verification module obtains a verification coefficient of the detection section according to the first verification test and the second verification test, and obtains a judgment result according to the verification coefficient, wherein the judgment result includes whether the current detection section is affected by other detection sections with risks; The early warning module issues an early warning based on the judgment result; The process of obtaining the validation coefficient for the detection segment includes: The optical cable has a total of m detection sections. For the i-th detection section, By formula: Get the verification coefficient Ve i , where n is the total number of state detection items, j∈n, σ j is the correction coefficient of the jth test item, is the risk factor of the jth test item obtained by the first verification test, is the risk factor of the jth test item obtained by the second verification test, X 0 is the preset standard value; The process of obtaining the judgment result includes: The verification coefficient Ve of the i-th detection section i With the corresponding comparison value V i Make comparisons; If Ve i >V i , then the judgment result is that the current detection section is affected by other risky detection sections during the detection process; If Ve i ≤V i , then the judgment result is that the current detection section is not affected by other risky detection sections during the detection process; Comparison value V i The acquisition process includes: By formula: Get the comparison value V i , where L is the length of the optical fiber in the optical cable, d1 is the distance between the first verification test initiation position and the i-th detection section, d2 is the distance between the second verification test initiation position and the i-th detection section, P1 is the input power of the optical fiber in the optical cable, P2 is the output power of the optical fiber in the optical cable, and R is a preset conversion function, preferably a comparison table function; The process of the early warning module issuing an early warning based on the judgment results includes: On the i-th detection section; If the judgment result is that the current detection section is not affected by other detection sections with risks during the detection process, it is determined whether to issue an early warning based on the risk coefficient of each detection item generated by the status detection; If the judgment result is that the current detection section is affected by other detection sections with risks during the detection process, the selection coefficients of the first verification test and the second verification test are respectively obtained, and the optimal detection direction of the i-th detection section is selected from the first verification test and the second verification test by the selection coefficients, and whether to issue an early warning is determined according to the risk coefficients of each detection item generated by the optimal detection direction; The process of obtaining the selection coefficient includes: By formula: Get the selection coefficient Se k ,in and are the preset first weight coefficient and the second weight coefficient, k takes the values ​​of 1 and 2, n1 is the count value of the current detection segment when counting all the detection segments reported as having risks along the detection direction of the first verification detection, n2 is the count value of the current detection segment when counting all the detection segments reported as having risks along the detection direction of the second verification detection, is to obtain n k The number of risky detection sections reported during the process, f is the preset normalization function, g1 is related to n k Negative correlation table function, g2 is related to Negative correlation lookup table function; The process of selecting the optimal detection direction includes: Compare the values ​​of Se1 and Se2 of the i-th detection section; The detection direction corresponding to the larger value of Se1 and Se2 is selected as the optimal detection direction.

2. According to claim 1, a communication optical cable operation status early warning system based on an optical cable junction box is characterized in that: The detection module comprises an optical cable junction box state detection unit, and the optical cable junction box state detection unit is used to detect the open and closed state of the cabinet door of the optical cable junction box.

3. According to claim 1, a communication optical cable operation status early warning system based on an optical cable junction box is characterized in that: The items of the state detection include vibration detection, temperature detection and stress detection. Each detection item has an independent detection cycle. The detection cycle of the detection item is adjusted according to the risk coefficient obtained in the previous detection.

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