A high performance buried cable for airport navigation lights

Abstract

The present invention relates to the field of buried cable monitoring, and in particular to a high-performance airport navigation light buried cable. The present invention comprises a cable body; a monitor, which comprises a vibration monitoring unit arranged on the cable body at predetermined intervals to monitor the vibration intensity of each cable segment, an audio analysis unit to monitor the audio data of each cable segment, and a current monitoring unit to monitor the current data; a label setter, which is connected to each monitor and is used to analyze mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period, and configure a label for each cable segment according to the mutation characteristics; a data analyzer, which is respectively connected to each monitor and the label setter, and is used to receive data monitored by each monitor based on the label configured for each cable segment and adaptively analyze each cable segment. Under the premise of ensuring data reliability, the present invention monitors the abnormal conditions of the cable segment in real time, issues timely warnings, and ensures the stable operation and safety of the buried cable.

Description

Technical Field

[0001] The invention relates to the field of buried cable monitoring, and in particular to a high-performance buried cable for airport navigation lights. Background Art

[0002] With the rapid development of aviation, the safety requirements for aircraft takeoff and landing are getting higher and higher. As an important equipment to ensure the safe takeoff and landing of aircraft, the reliability and stability of the navigation lighting system are given great attention. Among them, buried cables, as a key component of the navigation lighting system, put forward higher requirements on the performance of buried cables. Reducing the risk of damage to buried cables that work normally and stably, as well as the safety of the surrounding environment and aircraft are also top priorities.

[0003] Chinese patent application publication number: CN109064952A, discloses a buried cable position warning device, which includes a waterproof membrane layer, a plurality of warning sheets arranged in the waterproof membrane layer, and a power line connected to the warning sheets; the warning sheets are divided into a plurality of groups by rows or columns, the groups are arranged in parallel with each other and the connection relationship of the related power lines between the groups is parallel, and the warning sheets in each group are connected in parallel with each other; the warning sheet includes a shell and a plurality of groups of warning circuit units arranged in parallel in the shell; the warning circuit unit includes a plurality of connecting terminals connected in series and an alarm and / or an illuminator connected in series between the connecting terminals; the connecting terminals connect the serial circuit in a free state, and disconnect the serial circuit when subjected to external pressure.

[0004] However, there are still the following problems in the prior art:

[0005] In a large area of ​​the airport, some areas generate stress on the ground due to frequent landings of aircraft. Due to the propagation of stress, buried cables may have a certain risk of compression damage, which reduces the stable operation and safety of buried cables, and also affects the safety of the surrounding environment. Summary of the invention

[0006] To this end, the present invention provides a high-performance airport navigation light buried cable to overcome the problem in the prior art that in a large area of ​​the airport, some areas generate stress on the ground due to frequent landings of aircraft. Due to the propagation of stress, the buried cable may have a certain risk of compression damage, reducing the stable operation and safety of the buried cable, and also affecting the safety of the surrounding environment.

[0007] To achieve the above object, the present invention provides a high-performance airport navigation light buried cable, which includes:

[0008] Cable body;

[0009] A monitor, comprising a vibration monitoring unit arranged at predetermined intervals on the cable body for monitoring the vibration intensity of each cable segment, an audio analysis unit for monitoring audio data of each cable segment, and a current monitoring unit for monitoring current data;

[0010] a label setter connected to each of the monitors, for analyzing a sudden change feature based on the vibration intensity of each of the cable segments within a predetermined time period, and configuring a label for each of the cable segments according to the sudden change feature;

[0011] A data analyzer, which is connected to each of the monitors and the label setter, and is used to receive the data monitored by each of the monitors and analyze each of the cable segments based on the labels configured for each of the cable segments, including:

[0012] Controlling the audio analysis unit of the cable segment to continuously acquire audio data, determining whether the aircraft has arrived at the landing time based on the audio data within the scheduled aircraft landing time, so as to enable the vibration monitoring unit, determining the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, and determining the reference time domain segment based on the signal mutation time, so as to call the current data in the reference time domain segment to determine whether the cable segment has an abnormality;

[0013] Or, the audio intensity and current intensity of the cable segment are called up every detection cycle to determine whether there is an abnormality in the cable segment.

[0014] Furthermore, the process of the tag setter analyzing the mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period includes:

[0015] To construct a time domain curve of vibration intensity within a predetermined time period;

[0016] The method is used to determine the number of abnormal increase moments within the predetermined time period and the average value of the vibration intensity corresponding to each abnormal increase moment to obtain the mutation characteristic;

[0017] The abnormal increase moment is the moment corresponding to when the vibration intensity in the vibration intensity time domain curve is greater than or equal to the vibration intensity threshold.

[0018] Furthermore, the label setter is used to configure a label for each cable segment according to the mutation feature, including:

[0019] If the mutation tendency condition is met, the label of the cable segment is configured as a high mutation tendency label;

[0020] If the mutation tendency condition is not met, the label of the cable segment is configured as a low mutation tendency label;

[0021] Among them, the abnormal change tendency condition includes that the number of abnormal increase moments is greater than the number threshold and the average vibration intensity is greater than the vibration intensity threshold.

[0022] Furthermore, the data analyzer is used to receive the data monitored by each monitor based on the tag configured for each cable segment and analyze each cable segment, including:

[0023] If the tag configured for the cable segment is a tag with a high mutation tendency, the audio analysis unit of the cable segment is controlled to continuously acquire audio data, and whether the aircraft landing time has been reached based on the audio data within the scheduled aircraft landing time, so as to enable the vibration monitoring unit, determine the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, and determine the reference time domain segment based on the signal mutation time, so as to call the current data in the reference time domain segment to determine whether the cable segment has an abnormality;

[0024] If the tag configured for the cable segment is a tag with low mutation tendency, the audio intensity and current intensity of the cable segment are called every detection cycle to determine whether there is an abnormality in the cable segment.

[0025] Furthermore, the process of the data analyzer determining whether the aircraft has arrived at the landing time based on the audio data includes:

[0026] To determine audio data, including audio intensity and audio frequency;

[0027] for comparing the audio intensity with a sample audio intensity range;

[0028] for comparing the audio frequency with a sample audio frequency range;

[0029] If the audio intensity is within the sample audio intensity range and the audio frequency is within the sample audio frequency range, it is determined that the aircraft has arrived at the landing time.

[0030] Furthermore, the data analyzer is used to determine the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, including:

[0031] If the vibration intensity at any moment is greater than or equal to the signal mutation threshold, then the moment is determined to be the signal mutation moment.

[0032] Furthermore, the data analyzer is used to determine a reference time domain segment based on the signal mutation moment, wherein:

[0033] Determining a time domain segment of a predetermined length before the moment of the signal mutation as a first reference time domain segment;

[0034] The time domain segment of a predetermined time length after the signal mutation moment is determined as the second reference time domain segment.

[0035] Furthermore, the process of the data analyzer calling the current data in the reference time domain segment to determine whether the cable segment is abnormal includes:

[0036] To determine a first current fluctuation amount and a first current intensity within a first reference time domain end;

[0037] To determine the second current fluctuation amount and the second current intensity in the second reference time domain end;

[0038] to determine a current fluctuation difference between the second current fluctuation and the first current fluctuation;

[0039] for determining a current intensity difference between the second current intensity and the first current intensity;

[0040] If the current fluctuation amount difference is greater than a predetermined current fluctuation amount difference threshold or the current intensity difference is greater than a predetermined current intensity difference threshold, it is determined that an abnormality exists in the cable segment.

[0041] Furthermore, the process of the data analyzer calling the audio data and current data of the cable segment every detection period to determine whether the cable segment is abnormal includes:

[0042] Used to construct an audio intensity time domain curve based on the audio intensity;

[0043] Fitting the audio intensity time domain curve with the sample audio intensity time domain curve to obtain the audio intensity fitting degree mean;

[0044] Used to construct a current intensity time domain curve based on the current intensity;

[0045] Fitting the current intensity time domain curve with the sample current intensity time domain curve to obtain the current intensity fitting degree mean;

[0046] If the audio intensity fitting mean is less than or equal to the audio intensity fitting threshold and the current intensity fitting mean is less than or equal to the current intensity fitting threshold, it is determined that an abnormality exists in the cable segment.

[0047] Furthermore, it also includes an early warning device, which is connected to the data analyzer and is used to issue an early warning signal based on the analysis result of the data analyzer, wherein:

[0048] If the data analyzer determines that there is an abnormality in the cable segment, an early warning signal is issued.

[0049] Compared with the prior art, the present invention comprises a cable body; a monitor, comprising a vibration monitoring unit arranged on the cable body at predetermined intervals to monitor the vibration intensity of each cable segment, an audio analysis unit to monitor the audio data of each cable segment, and a current monitoring unit to monitor the current data; a label setter, connected to each monitor, to analyze the mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period, and to configure a label for each cable segment according to the mutation characteristics; a data analyzer, respectively connected to each monitor and the label setter, to receive the data monitored by each monitor based on the label configured for each cable segment and adaptively analyze each cable segment. Under the premise of ensuring data reliability, the present invention monitors the abnormal conditions of the cable segments in real time, issues timely warnings, and ensures the stable operation and safety of the buried cables.

[0050] In particular, the present invention analyzes the mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period. The cables laid at the airport have different probabilities of being subjected to impacts due to different locations. For example, for some areas, the stress caused by the frequent landing of aircraft on the ground and the stress propagation have a certain impact on the cables laid on both sides of the runway. Therefore, the present invention obtains the vibration intensity of each current segment within a predetermined time period, extracts the number of more representative abnormal increase moments and the mean value of the vibration intensity corresponding to the abnormal increase moment to determine the mutation characteristics of each cable segment, so as to identify the cable segment that is prone to stress interference due to the influence of the aircraft. The number of abnormal increase moments occurring in the monitored cable segment within the predetermined time period can indicate that the cable segment is subjected to uninterrupted abnormal pressure during the above-mentioned continuous time period. At the same time, the vibration intensity when the cable segment is subjected to abnormal pressure can also reflect the degree of damage tendency of the cable, thereby providing support for the subsequent configuration of corresponding labels for each cable segment. Each cable segment is adaptively analyzed through the data monitored by each monitor. The present invention more accurately analyzes the degree of damage risk of each cable segment under the premise of ensuring data reliability.

[0051] In particular, the present invention configures a corresponding mutation tendency label for each cable segment to perform corresponding analysis on the cable segment based on the monitored data. For each cable segment configured with a high mutation tendency label, since airplanes frequently land in the area where the cable segment is laid, the cable is easily subject to stress interference. The sample audio intensity range and the sample audio frequency range for the arrival of the airplane at the time of landing are extracted, and the current audio data is compared with the sample data range to determine whether the airplane has arrived at the landing time, so as to control the vibration detection unit to start before the airplane lands, and identify the changes in the cable parameters of the cable segment within a certain period of time when the airplane lands and impacts the ground. The moment of signal mutation is determined according to the vibration intensity of the cable segment to identify the moment of the airplane's impact on the ground. Since the representativeness of the data at a single moment is too thin, the present application determines two reference time domain segments, the purpose of which is to identify the changes in current data before and after the moment of the airplane's impact on the ground, so as to identify whether stress interference is caused by the impact, thereby affecting the function of the corresponding cable segment, and timely determine whether there is an abnormality in the cable segment to ensure the overall safety and stable operation of the buried cable.

[0052] In particular, for cable segments with low mutation tendency tags, the audio intensity and current intensity of the cable segment are called every detection cycle to determine whether there is any abnormality in the cable segment. For areas with non-frequent landing, the probability of the cable being abnormal due to stress interference is low. Therefore, periodic detection is adopted to reduce the amount of data, ensure the reliability of cable abnormality detection, and ensure the overall safety and stable operation of the buried cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a functional module diagram of a high-performance airport navigation light buried cable according to an embodiment of the invention;

[0054] Figure 2 A logical decision diagram for configuring labels for each cable segment for an embodiment of the invention;

[0055] Figure 3 A logic decision diagram for determining whether the aircraft has arrived at the landing time in an embodiment of the invention;

[0056] Figure 4 A logical decision diagram for determining the moment of signal mutation according to an embodiment of the invention. DETAILED DESCRIPTION

[0057] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0059] It should be noted that, in the description of the present invention, the terms such as "on" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0060] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] See also Figures 1 to 4 As shown, Figure 1 This is a functional module diagram of a high-performance airport navigation light buried cable according to an embodiment of the present invention. Figure 2 A logical decision diagram for configuring each cable segment label for an embodiment of the present invention, Figure 3 The following is a logic decision diagram for determining whether the aircraft has reached the landing time according to an embodiment of the invention. Figure 4 The logic decision diagram for determining the signal mutation moment in the embodiment of the invention is as follows: The high-performance airport navigation light buried cable in the embodiment of the invention includes:

[0062] Cable body;

[0063] A monitor, comprising a vibration monitoring unit arranged at predetermined intervals on the cable body for monitoring the vibration intensity of each cable segment, an audio analysis unit for monitoring audio data of each cable segment, and a current monitoring unit for monitoring current data;

[0064] a label setter connected to each of the monitors, for analyzing a sudden change feature based on the vibration intensity of each of the cable segments within a predetermined time period, and configuring a label for each of the cable segments according to the sudden change feature;

[0065] A data analyzer, which is connected to each of the monitors and the label setter, and is used to receive the data monitored by each of the monitors and analyze each of the cable segments based on the labels configured for each of the cable segments, including:

[0066] Controlling the audio analysis unit of the cable segment to continuously acquire audio data, determining whether the aircraft has arrived at the landing time based on the audio data within the scheduled aircraft landing time, so as to enable the vibration monitoring unit, determining the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, and determining the reference time domain segment based on the signal mutation time, so as to call the current data in the reference time domain segment to determine whether the cable segment has an abnormality;

[0067] Or, the audio intensity and current intensity of the cable segment are called up every detection cycle to determine whether there is an abnormality in the cable segment.

[0068] Specifically, there is no specific limitation on the determination of the predetermined interval. The cable segment interval can be divided according to the interval of 30m to 50m. Of course, other forms can also be used, which will not be repeated here.

[0069] Specifically, there is no specific limitation on the structure of the vibration monitoring unit, and it only needs to have the function of monitoring the vibration intensity, for example, a vibration sensor. This is a prior art and will not be described in detail.

[0070] Specifically, there is no specific limitation on the structure of the audio analysis unit, which only needs to have the function of monitoring audio data, for example, monitoring the audio intensity and audio frequency of each cable segment through an audio receiver. This is the existing technology and will not be elaborated here.

[0071] Specifically, there is no specific limitation on the structure of the current monitoring unit, which only needs to have the function of monitoring current data, for example, monitoring the current fluctuation and current intensity of each cable segment through a power monitor, which will not be elaborated here.

[0072] Specifically, the process of the tag setter for analyzing the mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period includes:

[0073] To construct a time domain curve of vibration intensity within a predetermined time period;

[0074] The method is used to determine the number of abnormal increase moments within the predetermined time period and the average value of the vibration intensity corresponding to each abnormal increase moment to obtain the mutation characteristic;

[0075] The abnormal increase moment is the moment corresponding to when the vibration intensity in the vibration intensity time domain curve is greater than or equal to the vibration intensity threshold.

[0076] It is understandable that the purpose of setting the predetermined time period is to obtain sufficient data to analyze the mutation characteristics and configure labels for each cable segment. Optionally, the predetermined time period is selected within [24h, 48h].

[0077] The present invention analyzes mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period. The cables laid at the airport have different probabilities of being subjected to impacts due to different locations. For example, for some areas, the stress caused by the frequent landing of aircraft on the ground and the stress propagation have a certain impact on the cables laid on both sides of the runway. Therefore, the present invention obtains the vibration intensity of each current segment within a predetermined time period, extracts the number of more representative abnormal increase moments and the mean value of the vibration intensity corresponding to the abnormal increase moment to determine the mutation characteristics of each cable segment, so as to identify the cable segment that is prone to stress interference due to the influence of the aircraft. The number of abnormal increase moments occurring in the monitored cable segment within the predetermined time period can indicate that the cable segment is subjected to uninterrupted abnormal pressure during the above-mentioned continuous time period. At the same time, the vibration intensity when the cable segment is subjected to abnormal pressure can also reflect the degree of damage tendency of the cable, thereby providing support for the subsequent configuration of corresponding labels for each cable segment. Each cable segment is adaptively analyzed through the data monitored by each monitor. The present invention more accurately analyzes the degree of damage risk of each cable segment under the premise of ensuring data reliability.

[0078] Specifically, the label setter is used to configure a label for each cable segment according to the mutation feature, including:

[0079] If the mutation tendency condition is met, the label of the cable segment is configured as a high mutation tendency label;

[0080] If the mutation tendency condition is not met, the label of the cable segment is configured as a low mutation tendency label;

[0081] Among them, the abnormal change tendency condition includes that the number of abnormal increase moments is greater than the number threshold and the average vibration intensity is greater than the vibration intensity threshold.

[0082] In this embodiment, the number threshold of abnormal increase moments and the vibration intensity threshold are pre-set, wherein the average number of abnormal increase moments and the average vibration intensity corresponding to the cables laid in the aircraft take-off and landing area within several predetermined time periods are obtained, and the number threshold of abnormal increase moments is set to 1.02 times to 1.04 times the average number of abnormal increase moments, and the vibration intensity threshold is set to 1.05 times to 1.12 times the average vibration intensity.

[0083] Specifically, the data analyzer is used to receive the data monitored by each monitor based on the tag configured for each cable segment and analyze each cable segment, including:

[0084] If the tag configured for the cable segment is a tag with a high mutation tendency, the audio analysis unit of the cable segment is controlled to continuously acquire audio data, and whether the aircraft landing time has been reached based on the audio data within the scheduled aircraft landing time, so as to enable the vibration monitoring unit, determine the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, and determine the reference time domain segment based on the signal mutation time, so as to call the current data in the reference time domain segment to determine whether the cable segment has an abnormality;

[0085] If the tag configured for the cable segment is a tag with low mutation tendency, the audio intensity and current intensity of the cable segment are called every detection cycle to determine whether there is an abnormality in the cable segment.

[0086] Specifically, the process of the data analyzer determining whether the aircraft has arrived at the landing time based on the audio data includes:

[0087] To determine audio data, including audio intensity and audio frequency;

[0088] for comparing the audio intensity with a sample audio intensity range;

[0089] for comparing the audio frequency with a sample audio frequency range;

[0090] If the audio intensity is within the sample audio intensity range and the audio frequency is within the sample audio frequency range, it is determined that the aircraft has arrived at the landing time.

[0091] It can be understood that by collecting audio intensity and audio frequency data under stable cable operation, several standard audio intensity samples and audio frequency samples are obtained, and an audio intensity sample database and an audio frequency sample database are constructed to determine the sample audio intensity range and the sample audio frequency range, which will not be repeated here.

[0092] Specifically, the data analyzer is used to determine the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, including:

[0093] If the vibration intensity at any moment is greater than or equal to the signal mutation threshold, then the moment is determined to be the signal mutation moment.

[0094] In this embodiment, the signal mutation threshold is selected between 1.5 times and 2.5 times the vibration intensity threshold.

[0095] Specifically, the data analyzer is used to determine a reference time domain segment based on the signal mutation moment, wherein:

[0096] Determining a time domain segment of a predetermined length before the moment of the signal mutation as a first reference time domain segment;

[0097] The time domain segment of a predetermined time length after the signal mutation moment is determined as the second reference time domain segment.

[0098] It is understandable that there is no limitation on the method of determining the predetermined time length, and the purpose is to compare the current data of the cables laid in the landing area within a certain time before and after the aircraft takes off and lands. Optionally, the predetermined time length is selected within the interval [0.5s, 1s].

[0099] Specifically, the process of the data analyzer calling the current data in the reference time domain segment to determine whether the cable segment is abnormal includes:

[0100] To determine a first current fluctuation amount and a first current intensity within a first reference time domain end;

[0101] To determine the second current fluctuation amount and the second current intensity in the second reference time domain end;

[0102] to determine a current fluctuation difference between the second current fluctuation and the first current fluctuation;

[0103] for determining a current intensity difference between the second current intensity and the first current intensity;

[0104] If the current fluctuation amount difference is greater than a predetermined current fluctuation amount difference threshold or the current intensity difference is greater than a predetermined current intensity difference threshold, it is determined that an abnormality exists in the cable segment.

[0105] The purpose of setting the current fluctuation amount difference threshold and the current intensity difference threshold is to identify the difference in current data between the first reference time domain segment and the second reference time domain segment. Therefore, the current fluctuation amount difference threshold can be determined by the historical average current fluctuation amount of the cable segment, and optionally, it can be set to 0.15 to 0.35 times of the historical average current fluctuation amount. The current intensity difference threshold can be determined by the historical average current intensity of the cable segment, and optionally, it can be set to 0.15 to 0.35 times of the historical average current intensity.

[0106] The current fluctuation is the variance of the current intensity at each moment in the time domain segment.

[0107] Specifically, the process of the data analyzer calling the audio data and current data of the cable segment every detection period to determine whether the cable segment has an abnormality includes:

[0108] Used to construct an audio intensity time domain curve based on the audio intensity;

[0109] Fitting the audio intensity time domain curve with the sample audio intensity time domain curve to obtain the audio intensity fitting degree mean;

[0110] Used to construct a current intensity time domain curve based on the current intensity;

[0111] Fitting the current intensity time domain curve with the sample current intensity time domain curve to obtain the current intensity fitting degree mean;

[0112] If the audio intensity fitting mean is less than or equal to the audio intensity fitting threshold and the current intensity fitting mean is less than or equal to the current intensity fitting threshold, it is determined that an abnormality exists in the cable segment.

[0113] It is understandable that, for determining the sample current intensity time domain curve, the current intensity data under stable operation of the cable can be collected to obtain several standard current intensity samples to construct several sample current intensity time domain curves, which will not be elaborated here.

[0114] For determining the sample audio time domain curve, the audio intensity data under stable operation of the cable may be collected to obtain a number of audio intensity samples, and a number of sample audio intensity time domain curves may be constructed.

[0115] Specifically, there is no specific limitation on the way of fitting the time domain curve. For example, MATLAB can be used to fit the time domain curve. The fitting method is also not limited. Statistical feature analysis can be used, such as mean and standard deviation as the degree of fit. The correlation coefficient can also be calculated and used as the degree of fit. The correlation coefficient is between -1 and 1. The higher the correlation coefficient, the higher the correlation of the time domain curve. Of course, other methods can also be used, which will not be repeated here.

[0116] In this embodiment, the audio intensity fitting threshold and the current intensity fitting threshold are obtained in advance. The fitting between several sample audio intensity time domain curves can be solved in advance, the fitting mean can be solved, and 0.9 times the fitting mean is set as the audio intensity fitting threshold.

[0117] Similarly, the fitting degree between the time-domain curves of several sample current intensities may be solved in advance, the fitting degree mean may be solved, and 0.85 times of the fitting degree mean may be set as the current intensity fitting degree threshold;

[0118] The present invention configures a corresponding mutation tendency label for each cable segment to perform corresponding analysis on the cable segment based on the monitored data. For each cable segment configured with a high mutation tendency label, since airplanes frequently land in the area where the cable segment is laid, the cable is easily subject to stress interference. The sample audio intensity range and the sample audio frequency range for the arrival of the airplane at the landing time are extracted, and the current audio data are compared with the sample data range to determine whether the airplane has arrived at the landing time, so as to control the vibration detection unit to start before the airplane lands, and identify the changes in the cable parameters of the cable segment within a certain period of time when the airplane lands and impacts the ground. The signal mutation moment is determined according to the vibration intensity of the cable segment to identify the moment when the airplane hits the ground. Since the representativeness of the data at a single moment is too thin, the present application determines two reference time domain segments, the purpose of which is to identify the changes in the current data before and after the moment when the airplane hits the ground, so as to identify whether stress interference is caused by the impact, thereby affecting the function of the corresponding cable segment, and timely determine whether there is an abnormality in the cable segment to ensure the overall safety and stable operation of the buried cable.

[0119] For cable segments with low mutation tendency tags, the audio intensity and current intensity of the cable segment are called every detection cycle to determine whether there is any abnormality in the cable segment. For areas with infrequent landing, the probability of the cable being abnormal due to stress interference is low. Therefore, periodic detection is adopted to reduce the amount of data, ensure the reliability of cable abnormality detection, and ensure the overall safety and stable operation of the buried cable.

[0120] Specifically, it also includes an early warning device, which is connected to the data analyzer and is used to issue an early warning signal based on the analysis result of the data analyzer, wherein:

[0121] If the data analyzer determines that there is an abnormality in the cable segment, an early warning signal is issued.

[0122] It is understandable that an early warning signal is sent to the airport's maintenance center for timely maintenance.

[0123] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A high-performance airport navigation light buried cable, characterized in that: include: Cable body; A monitor, comprising a vibration monitoring unit arranged at predetermined intervals on the cable body for monitoring the vibration intensity of each cable segment, an audio analysis unit for monitoring audio data of each cable segment, and a current monitoring unit for monitoring current data; a label setter connected to each of the monitors, for analyzing a sudden change feature based on the vibration intensity of each of the cable segments within a predetermined time period, and configuring a label for each of the cable segments according to the sudden change feature; a data analyzer, which is connected to each of the monitors and the label setter, and is used to receive the data monitored by each of the monitors and analyze each of the cable segments based on the labels configured for each of the cable segments; include, If the tag configured for the cable segment is a tag with a high mutation tendency, the audio analysis unit of the cable segment is controlled to continuously acquire audio data, and whether the aircraft landing time has been reached based on the audio data within the scheduled aircraft landing time, so as to enable the vibration monitoring unit, determine the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, and determine the reference time domain segment based on the signal mutation time, so as to call the current data in the reference time domain segment to determine whether the cable segment has an abnormality; If the tag configured for the cable segment is a tag with low mutation tendency, the audio intensity and current intensity of the cable segment are called every detection cycle to determine whether there is an abnormality in the cable segment.

2. The high performance airport navigation light buried cable according to claim 1, characterized in that: The process of the tag setter for analyzing the mutation characteristics based on the vibration intensity of each cable segment within a predetermined time period includes: Used to construct a time domain curve of vibration intensity within a predetermined time period; The method is used to determine the number of abnormal increase moments within the predetermined time period and the average value of the vibration intensity corresponding to each abnormal increase moment to obtain the mutation characteristic; The abnormal increase moment is the moment corresponding to when the vibration intensity in the vibration intensity time domain curve is greater than or equal to the vibration intensity threshold.

3. The high performance airport navigation light buried cable according to claim 1, characterized in that: The label setter is used to configure a label for each cable segment according to the mutation characteristics, including: If the mutation tendency condition is met, the label of the cable segment is configured as a high mutation tendency label; If the mutation tendency condition is not met, the label of the cable segment is configured as a low mutation tendency label; Among them, the abnormal change tendency condition includes that the number of abnormal increase moments is greater than the number threshold and the average vibration intensity is greater than the vibration intensity threshold.

4. The high performance airport navigation light buried cable according to claim 1, characterized in that: The process of the data analyzer determining whether the aircraft has arrived at the landing time based on the audio data includes: To determine audio data, including audio intensity and audio frequency; for comparing the audio intensity with a sample audio intensity range; for comparing the audio frequency with a sample audio frequency range; If the audio intensity is within the sample audio intensity range and the audio frequency is within the sample audio frequency range, it is determined that the aircraft has arrived at the landing time.

5. The high performance airport navigation light buried cable according to claim 1, characterized in that: The data analyzer is used to determine the signal mutation time based on the vibration intensity monitored by the vibration monitoring unit, including: If the vibration intensity at any moment is greater than or equal to the signal mutation threshold, then the moment is determined to be the signal mutation moment.

6. The high performance airport navigation light buried cable according to claim 1, characterized in that: The data analyzer is used to determine a reference time domain segment based on the signal mutation moment, wherein: Determining a time domain segment of a predetermined length before the moment of the signal mutation as a first reference time domain segment; The time domain segment of a predetermined time length after the signal mutation moment is determined as the second reference time domain segment.

7. The high performance airport navigation light buried cable according to claim 1, characterized in that: The process of the data analyzer calling the current data in the reference time domain segment to determine whether the cable segment has an abnormality includes: To determine a first current fluctuation amount and a first current intensity within a first reference time domain end; To determine the second current fluctuation amount and the second current intensity in the second reference time domain end; to determine a current fluctuation difference between the second current fluctuation and the first current fluctuation; for determining a current intensity difference between the second current intensity and the first current intensity; If the current fluctuation amount difference is greater than a predetermined current fluctuation amount difference threshold or the current intensity difference is greater than a predetermined current intensity difference threshold, it is determined that an abnormality exists in the cable segment.

8. The high performance airport navigation light buried cable according to claim 1, characterized in that: The process of the data analyzer calling the audio data and current data of the cable segment every detection period to determine whether the cable segment has an abnormality includes: Used to construct an audio intensity time domain curve based on the audio intensity; Fitting the audio intensity time domain curve with the sample audio intensity time domain curve to obtain the audio intensity fitting degree mean; Used to construct a current intensity time domain curve based on the current intensity; Fitting the current intensity time domain curve with the sample current intensity time domain curve to obtain the current intensity fitting degree mean; If the audio intensity fitting mean is less than or equal to the audio intensity fitting threshold and the current intensity fitting mean is less than or equal to the current intensity fitting threshold, it is determined that an abnormality exists in the cable segment.

9. The high performance airport navigation light buried cable according to claim 1, characterized in that: It also includes an early warning device, which is connected to the data analyzer and is used to issue an early warning signal based on the analysis result of the data analyzer, wherein: If the data analyzer determines that there is an abnormality in the cable segment, an early warning signal is issued.

Images