Optical cable burial depth detection method and system, electronic equipment and storage medium

Abstract

The invention provides an optical cable burial depth detection method, an optical cable burial depth detection system, electronic equipment and a storage medium. Comparing the take-off time point of the second vibration data received by the vibration receiving equipment with the take-off time point of the first vibration data received by the optical cable to be detected, and finding out the setting position of the vibration receiving equipment which enables the take-off time points of the first vibration data and the second vibration data to coincide; and taking the horizontal distance from the vibration receiving equipment to the vibration applying position as the burial depth of the to-be-measured optical cable. Compared with the prior art, the transmission speed of vibration does not need to be measured, measurement can be completed only through the vibration receiving device which can detect ground vibration and upload corresponding vibration data and time information, the measurement operation is simple and clear, the burial depth detection efficiency of the to-be-detected optical cable is greatly improved, and the method is suitable for popularization and application. And meanwhile, the detection equipment and the operation cost are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber data processing, and more specifically, to an optical cable buried depth detection method, system, electronic equipment and storage medium. Background Art

[0002] Traditionally, the detection of buried depth of optical cables is mainly carried out by transmitting electromagnetic wave pulse radar to the ground through optical cable buried depth detection equipment to detect metal or round long objects underground. When metal or round long objects are detected, a reflected signal will be reflected back to the receiver. After receiving the signal, the receiver will calculate the depth of the directly buried optical cable.

[0003] As mentioned above, traditional optical cable buried depth detection equipment uses metal or round long objects as judgment standards, which makes it difficult to directly obtain the buried depth of the optical cable and is prone to misjudgment, resulting in low accuracy. In addition, traditional optical cable buried depth detection equipment needs to be moved multiple times at a certain angle for detection, which is difficult to operate and takes a long time. Summary of the invention

[0004] The present invention aims to overcome at least one defect of the above-mentioned prior art and provides a method, system, electronic device and storage medium for detecting the buried depth of an optical cable, which are used to detect the buried depth of an optical cable more accurately and quickly.

[0005] The technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a method for detecting the buried depth of an optical cable, the method comprising:

[0007] Determine a vibration application position according to the optical cable route of the optical cable to be tested, and apply a detection vibration at the vibration application position; the vibration application position is located directly above the optical cable route;

[0008] By accessing the distributed optical fiber sensing device of the optical cable to be tested, collecting first vibration data formed by the detection vibration in the optical cable to be tested corresponding to the vibration application position;

[0009] The second vibration data generated by the detection vibration on the ground is collected by a vibration receiving device; the vibration receiving device is arranged at a ground position at a certain horizontal distance from the vibration application position;

[0010] aligning the first vibration data and the second vibration data according to time information in the first vibration data and the second vibration data;

[0011] Determine whether the start time points of the first vibration data and the second vibration data after alignment coincide with each other;

[0012] If they coincide, the horizontal distance between the vibration receiving device and the vibration applying position is taken as the buried depth of the optical cable to be tested;

[0013] If they do not coincide, adjust the setting position of the vibration receiving device, and reapply the detection vibration according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position to obtain the buried depth of the optical cable to be tested.

[0014] Vibration usually propagates around the vibration source. Within a certain small distance range, if the transmission medium is the same, the vibration propagation speed can be approximately regarded as equal. By utilizing this property of vibration, the position directly above the optical cable to be measured is determined, and the position directly above the optical cable to be measured is used as the vibration application position to apply the detection vibration. Since the vibration application position is located directly above the optical cable to be measured, the vertical distance from the position where the optical cable to be measured first detects the detection vibration to the vibration application position is the burial depth of the optical cable to be measured under the corresponding position; the detection vibration propagated along the ground is received by a vibration receiving device set on the ground, and the first vibration data detected by the optical cable to be measured and the second vibration data detected by the vibration receiving device are compared to find the corresponding same starting time point. The starting time point indicates the time point when the corresponding device detects the vibration. Assuming that the vibration propagation speed is the same, after finding the corresponding same starting time point, the horizontal distance between the vibration receiving device and the vibration application position is the burial depth of the optical cable to be measured;

[0015] In the present invention, there is no need to obtain a specific vibration propagation speed. It is only necessary to obtain the first vibration data and the second vibration data detected by the optical cable to be tested and the vibration receiving device respectively, and compare the starting time points to measure the buried depth of the optical cable to be tested. The operation is simple and efficient, and the buried depth of the optical cable to be tested can be calculated more quickly and accurately. In addition, since the operation of the present invention is simple and efficient, and the vibration receiving device only needs to receive and upload the second vibration data, the cost of operation and equipment production is greatly reduced.

[0016] Further, the step of determining the vibration application position according to the optical cable route of the optical cable to be tested specifically includes:

[0017] In a direction intersecting with the optical cable route of the optical cable to be tested, positioning vibrations are applied to several ground positions respectively, the vibration intensity of each positioning vibration is collected through the optical cable to be tested, and the positioning vibration with the largest vibration intensity is used as the vibration application position.

[0018] During the vibration propagation process, as the vibration propagation distance continues to increase, the vibration intensity will continue to decay. Then, the positioning vibration with the maximum vibration intensity is detected on the optical cable to be tested, indicating that the straight-line distance between the ground position of the positioning vibration and the optical cable to be tested is the shortest, indicating that the ground position is located directly above the optical cable route. The vibration application position can be located and determined by connecting the distributed optical fiber sensing device of the optical cable to be tested without the need for additional equipment, and the operation is simple and convenient, which improves the detection efficiency and reduces the operating cost.

[0019] Furthermore, the time information is generated by a time synchronization device; the distributed optical fiber sensing device and the vibration receiving device are both equipped with the time synchronization device.

[0020] The time synchronization device is respectively configured in the distributed optical fiber sensing device and the vibration receiving device, and the time synchronization device generates corresponding time information respectively, so that the vibration receiving device can run detection separately from the distributed optical fiber sensing device. The vibration receiving device only needs to upload the second vibration data detected, thereby reducing the data interaction process and improving the detection efficiency.

[0021] Furthermore, the time synchronization device includes a GPS unit.

[0022] The GPS unit has a simple structure and can effectively obtain millisecond-level positioning time, reducing the cost of the equipment while ensuring positioning accuracy.

[0023] Further, the step of adjusting the setting position of the vibration receiving device, reapplying the detection vibration and obtaining the buried depth of the optical cable to be tested according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position, specifically includes:

[0024] According to the starting time points of the detection vibration corresponding to the first vibration data and the second vibration data, the setting position of the vibration receiving device is adjusted and the detection vibration is re-applied until a setting position is found so that the starting time of the first vibration data and the second vibration data corresponding to the re-applied detection vibration coincides.

[0025] When the take-off time points do not coincide, it is only necessary to adjust the setting position of the vibration receiving device, that is, the horizontal distance from the vibration receiving device to the vibration applying position and reapply the detection vibration, which is simple and convenient to operate.

[0026] Further, adjusting the setting position of the vibration receiving device according to the starting time points of the first vibration data and the second vibration data specifically includes:

[0027] Obtain the time difference between the starting time points of the first vibration data and the second vibration data, obtain the distance relationship between the vibration application position and the vibration receiving device and the optical cable to be tested respectively according to the time difference, and adjust the setting position of the vibration receiving device according to the distance relationship.

[0028] Under the assumption that the vibration propagation speeds are the same, the distance relationship can be quickly acquired, and then the setting position of the vibration receiving device can be quickly adjusted according to the distance relationship.

[0029] Further, adjusting the setting position of the vibration receiving device according to the distance relationship specifically includes:

[0030] According to the distance relationship, the setting position of the vibration receiving device is adjusted on the straight line where the connecting line between the vibration applying position and the vibration receiving device is located.

[0031] By adjusting the setting position of the vibration receiving device on the straight line where the connecting line between the vibration applying position and the vibration receiving device is located, the setting position of the vibration receiving device can be conveniently referenced and adjusted.

[0032] Furthermore, the straight line connecting the vibration applying position and the vibration receiving device is perpendicular to the optical cable route.

[0033] Vertically adjusting the position of the vibration receiving device can facilitate standardization of the detection operation process and improve the efficiency of detection.

[0034] In a second aspect of the present invention, there is provided a system for detecting the buried depth of an optical cable, the detection system comprising:

[0035] A vibration position positioning module, used for determining a vibration application position according to an optical cable route of the optical cable to be tested, and applying a detection vibration at the vibration application position; the vibration application position is located directly above the optical cable route;

[0036] A first data acquisition module, which collects first vibration data formed by the detection vibration in the optical cable to be tested corresponding to the vibration application position by accessing the distributed optical fiber sensing device of the optical cable to be tested;

[0037] A second data acquisition module is used to collect second vibration data generated by the detection vibration on the ground through a vibration receiving device; the vibration receiving device is set at a ground position at a certain horizontal distance from the vibration application position;

[0038] A data alignment module, configured to align the first vibration data and the second vibration data according to time information in the first vibration data and the second vibration data;

[0039] A data calculation module, used for determining whether the start time points of the first vibration data and the second vibration data after alignment coincide with each other;

[0040] If they coincide, the horizontal distance between the vibration receiving device and the vibration applying position is taken as the buried depth of the optical cable to be tested;

[0041] If they do not coincide, adjust the setting position of the vibration receiving device, and reapply the detection vibration according to the horizontal distance between the setting position of the vibration receiving device and the vibration application position after the adjustment, and obtain the buried depth of the optical cable to be tested. In a third aspect of the present invention, an electronic device is provided, comprising a memory and a processor, wherein the memory stores computer-readable instructions, and the processor executes the computer-readable instructions to implement a method for detecting buried depth of optical cables as described in the first aspect above.

[0042] According to a fourth aspect of the present invention, a computer storage medium is provided, on which a computer program is stored, and when the computer program is executed, the method for detecting the buried depth of an optical cable described in the first aspect is implemented.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The present invention obtains a vibration application position located directly above the optical cable to be tested, and sets a vibration receiving device capable of detecting vibration conditions and uploading it at a ground position at a certain horizontal distance from the vibration application position. The detection vibration is applied at the vibration application position by utilizing the principle of vibration propagation. The first vibration data and the second vibration data corresponding to the detection vibration are respectively collected through the optical cable to be tested and the vibration receiving device. According to the start time points of the aligned first vibration data and the second vibration data, combined with the setting position of the vibration receiving device, the burial depth of the corresponding position of the optical cable to be tested can be simply and quickly obtained. Moreover, the vibration receiving device only needs to be able to receive vibration and generate corresponding vibration data for uploading, so it is very simple to produce and set up, which greatly reduces the cost of optical cable burial depth detection.

[0045] 2. The present invention utilizes the vibration principle, and detects vibration data from the ground and underground directions respectively through the vibration receiving device and the optical cable to be tested. The position of the vibration receiving device is adjusted by adjusting the position of the vibration receiving device arranged on the ground, so that the second vibration data obtained by the vibration receiving device corresponds to the first vibration data received by the optical cable to be tested, thereby making the distances from the vibration application position to the vibration receiving device and the optical cable to be tested equal, and then directly measuring the horizontal distance from the vibration application position on the ground to the vibration receiving device. The implementation steps are simple and efficient, and can effectively improve the efficiency of optical cable buried depth detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a flow chart of the steps of the detection method of the present invention.

[0047] Figure 2 It is a system structure diagram of the detection system of the present invention.

[0048] Figure 3 It is a schematic diagram of the starting time points of the aligned first vibration data and the second vibration data of the present invention.

[0049] Figure 4 It is a device structure diagram of the electronic device of the present invention.

[0050] The accompanying drawings are labeled: vibration position positioning module 11, first data acquisition module 12, second data acquisition module 13, data alignment module 14, data calculation module 15, memory 21, processor 22, bus 23, communication interface 24. DETAILED DESCRIPTION

[0051] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0052] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0054] Example 1

[0055] With the continuous development and popularization of optical fiber technology, optical fiber technology has been applied to various fields, which has led to an increasing number of optical cables being laid. In order to ensure the normal operation of optical cables, they need to be regularly maintained and managed, but the maintenance and management of optical cables face many technical challenges, one of which is the depth of the optical cables. At present, most optical cables are buried underground. By burying the optical cables underground, the optical cables are protected from external damage and the stability of signal transmission is ensured. However, burying the optical cables underground will make it difficult to determine the depth of the optical cables, thereby increasing the difficulty of optical cable maintenance.

[0056] Traditionally, the detection of buried depth of optical cables is mainly carried out by transmitting electromagnetic wave pulse radar to the ground through optical cable buried depth detection equipment to detect metal or round long objects underground. When metal or round long objects are detected, a reflected signal will be reflected back to the receiver. After receiving the signal, the receiver will calculate the depth of the directly buried optical cable.

[0057] As mentioned above, the traditional optical cable buried depth detection equipment uses metal or round long objects as the judgment standard, and it is difficult to directly obtain the buried depth of the optical cable. At the same time, when other metal or round long objects are buried in the ground, the traditional optical cable buried depth detection equipment is prone to misjudgment, resulting in low accuracy; in addition, the traditional optical cable buried depth detection equipment requires a transmitter that emits electromagnetic wave pulse radar, and also requires a corresponding receiver, which leads to the complex structure of the traditional optical cable buried depth detection equipment, the corresponding operation is also more complicated, and the production cost is also higher; and the traditional optical cable buried depth detection equipment needs to be moved multiple times for detection at a certain angle, which is difficult to operate and takes a long time.

[0058] This embodiment provides a technical solution that can solve the above-mentioned problem. The specific implementation methods of this application are described in detail below in conjunction with the accompanying drawings.

[0059] like Figure 1 As shown, this embodiment provides a method for detecting the buried depth of an optical cable, the method comprising:

[0060] S1: determining a vibration application position according to the optical cable route of the optical cable to be tested, and applying a detection vibration at the vibration application position;

[0061] In this embodiment, the detection vibration may be a vibration of a certain preset frequency. By applying a vibration of a certain preset frequency as the detection vibration, the corresponding information of the detection vibration can be extracted more conveniently.

[0062] Specifically, in a preferred implementation manner of this embodiment, the detection vibration can be generated by knocking on the ground, and the corresponding equipment and operation are simple, and only a knocking tool such as a rubber hammer is needed to apply the detection vibration.

[0063] Furthermore, in this embodiment, in order to ensure the accuracy of the detected buried depth of the optical cable, the vibration application position is located directly above the optical cable route;

[0064] The acquisition of the vibration application position may specifically include:

[0065] In a direction intersecting with the optical cable route of the optical cable to be tested, positioning vibrations are applied to several ground positions respectively, and the vibration intensity of each positioning vibration is collected by a distributed optical fiber sensing device connected to the optical cable to be tested, and the positioning vibration with the largest vibration intensity is used as the vibration application position.

[0066] During the vibration propagation process, as the vibration propagation distance continues to increase, the vibration intensity will continue to decay. Then, at a certain position point on the optical cable to be tested, the positioning vibration with the maximum vibration intensity is detected, indicating that the vibration attenuation of the positioning vibration is the smallest, indicating that the straight-line distance between the ground position of the positioning vibration and the corresponding position point of the optical cable to be tested is the shortest, indicating that the ground position is located directly above the optical cable route. The positioning and determination of the vibration application position can be completed by connecting the distributed optical fiber sensing device of the optical cable to be tested without the need for additional equipment, and the operation is simple and convenient, which improves the detection efficiency and reduces the operating cost.

[0067] Among them, the distributed optical fiber sensing equipment may include but is not limited to DVS (Distributed Optical Fiber Vibration Sensing System), DAS (Distributed Optical Fiber Audio Sensing System), etc.; in a preferred implementation of this embodiment, the distributed optical fiber sensing equipment is set to DAS, which can directly detect the detection vibration and form the first vibration data.

[0068] In this embodiment, the positioning vibration can be a vibration with a preset amplitude. By applying a vibration with a preset amplitude as the positioning vibration, the amplitude of the applied positioning vibration is ensured to be the same, and the ground position of the positioning vibration with the maximum vibration intensity can be more conveniently obtained; wherein, the positioning vibration can be generated by a vibration generating device in the prior art that can generate vibrations of the same amplitude.

[0069] S2: collecting first vibration data formed by the detection vibration in the optical cable to be tested corresponding to the vibration application position through a distributed optical fiber sensing device connected to the optical cable to be tested;

[0070] According to the vibration propagation principle, the detection vibration propagates in all directions. During the propagation process, the detection vibration is received by the optical cable to be tested buried underground. At the same time, in this embodiment, in the process of obtaining the vibration application position in step S1, the position point of the optical cable to be tested corresponding to the vibration application position can be further obtained through the distributed optical fiber sensing device. The distance from the vibration application position to the position point is the shortest distance from the vibration application position to the optical cable to be tested, that is, the burial depth of the optical cable to be tested. After receiving the detection vibration, the optical cable to be tested is received and processed by the distributed optical fiber sensing device connected to the optical cable to be tested to form the first vibration data.

[0071] S3: collecting second vibration data generated by the detection vibration on the ground through a vibration receiving device; the vibration receiving device is set at a ground position at a certain horizontal distance from the vibration application position;

[0072] In this embodiment, since the propagation direction of the detection vibration is to propagate in all directions, the detection vibration will not only propagate downward during the propagation process, but also propagate horizontally along the ground direction. It can be received by the vibration receiving device set at a ground position at a certain horizontal distance from the vibration application position to form the second vibration data.

[0073] In a preferred implementation of this embodiment, the vibration receiving device may include a vibration collection unit, a data processing unit and a data uploading unit, the vibration collection unit is used to collect the second vibration data, the data processing unit is used to process the second vibration data so that the device can directly identify and display the second vibration data, and the data uploading unit is used to upload the processed second vibration data. It can be understood that in this embodiment, the vibration receiving device only needs to receive the detected vibration and upload it, so the structure of the vibration receiving device in this embodiment is very simple, thereby reducing the cost of production and use of the device.

[0074] S4: aligning the first vibration data and the second vibration data according to time information in the first vibration data and the second vibration data;

[0075] Specifically, in this embodiment, the alignment is to set the first vibration data and the second vibration data on the same time axis according to the time information in the first vibration data and the second vibration data, and the chronological relationship between the first vibration data and the second vibration data can be clearly obtained through the time axis.

[0076] In this embodiment, the burial depth of the optical cable to be tested is mainly determined by comparing the first vibration data detected by the distributed optical fiber sensing device with the second vibration data detected by the vibration receiving device. In order to better compare the first vibration data and the second vibration data, it is necessary to put the first vibration data and the second vibration data on the same benchmark, that is, to align the first vibration data and the second vibration data. According to the relevant principle formula of vibration propagation, the data related to vibration include the propagation speed and propagation time of vibration. The propagation speed of vibration needs to be additionally measured. Therefore, in this embodiment, the time information is used as the basis for aligning the first vibration data and the second vibration data.

[0077] The time information in the first vibration data and the second vibration data may be generated by a time synchronization device, and both the distributed optical fiber sensing device and the vibration receiving device are equipped with the time synchronization device.

[0078] The distributed optical fiber sensing device and the vibration receiving device are respectively configured with time synchronization devices to generate the corresponding time information, so that the vibration receiving device can run detection separately from the distributed optical fiber sensing device. The vibration receiving device only needs to upload the second vibration data detected, thereby reducing the data interaction process and improving the detection efficiency.

[0079] In a preferred implementation of this embodiment, the time synchronization device includes a GPS unit. The GPS unit has a simple structure and can effectively obtain millisecond-level positioning time, thereby reducing the cost of the equipment while ensuring positioning accuracy.

[0080] S5: determining whether the start time points of the first vibration data and the second vibration data after alignment coincide with each other;

[0081] If they coincide, the horizontal distance between the vibration receiving device and the vibration applying position is taken as the buried depth of the optical cable to be tested;

[0082] If they do not overlap, adjust the setting position of the vibration receiving device, and re-apply the detection vibration according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position to obtain the buried depth of the optical cable to be tested.

[0083] In this embodiment, the starting time point represents the time point when the detection vibration is received. Figure 3 As shown, the first vibration data and the second vibration data are restored to the corresponding vibration intensity of the detection vibration, and the vibration intensity is displayed through a waveform, then the waveform corresponding to the detection vibration will appear at the time point when the detection vibration is received.

[0084] According to the propagation principle of vibration, vibration usually propagates around the vibration source. Within a certain small distance range, if the transmission medium is the same, the vibration propagation speed can be approximately regarded as equal. It can be understood that the vibration receiving device is set on the ground, and the optical cable to be tested is buried under the ground, so the propagation medium of the detection vibration when propagating to the vibration receiving device and the optical cable to be tested is the same, both of which are ground. It can be understood that the propagation speed of the detection vibration when propagating to the vibration receiving device and the optical cable to be tested is the same.

[0085] In this embodiment, since the first vibration data and the second vibration data are aligned in the same time axis, and the propagation speed of the detection vibration is the same, the time information in the first vibration data and the second vibration data actually reflects the distance from the vibration application position to the optical cable to be tested and the vibration receiving device, respectively. Therefore, the burial depth of the optical cable to be tested is obtained according to the start time point of the aligned first vibration data and the second vibration data, and the horizontal distance between the vibration receiving device and the vibration application position. Specifically:

[0086] If the start time points of the aligned first vibration data and the second vibration data coincide with each other, the horizontal distance between the vibration receiving device and the vibration applying position is used as the buried depth of the optical cable to be tested.

[0087] The optical cable to be tested is arranged below the ground, and the shortest distance from the vibration application position to the optical cable to be tested, that is, the buried depth is difficult to measure. In this embodiment, if the starting time points of the first vibration data and the second vibration data after alignment coincide, under the premise of the same vibration propagation speed, the vertical distance from the vibration application position to the optical cable to be tested is the same as the horizontal distance from the vibration application position to the vibration receiving device, and since the vibration application position and the vibration receiving device are both located on the ground, the horizontal distance from the vibration application position to the vibration receiving device can be measured as the shortest distance from the vibration application position to the optical cable to be tested, that is, the buried depth of the optical cable to be tested is obtained. In this embodiment, there is no need to measure the vibration propagation speed, the calculation steps are simple and accurate, and the efficiency of the buried depth detection calculation of the optical cable to be tested is effectively improved.

[0088] Furthermore, if the starting times of the first vibration data and the second vibration data after alignment do not overlap, the setting position of the vibration receiving device is adjusted according to the starting time points of the first vibration data and the second vibration data, and the detection vibration is reapplied until a setting position is found so that the starting time of the first vibration data and the second vibration data corresponding to the re-applied detection vibration overlaps.

[0089] Specifically, when the starting time points do not coincide, it means that the shortest distances from the vibration application position to the optical cable to be tested and the vibration receiving device are not equal. Since the vibration receiving device is set on the ground, the vibration receiving device can be used as a scale to measure the buried depth of the optical cable to be tested. By adjusting the setting position of the vibration receiving device, the starting time points of the first vibration data and the second vibration data are made to coincide.

[0090] When the starting time points do not overlap, the starting time points of the first vibration data and the second vibration data have a sequential relationship, and there is a certain time difference between the starting time points of the two. In this embodiment, the vibration receiving device can be adjusted in the following manner:

[0091] Obtain the time difference between the starting time points of the first vibration data and the second vibration data, obtain the distance relationship between the vibration application position and the vibration receiving device and the optical cable to be tested respectively according to the time difference, and adjust the setting position of the vibration receiving device according to the distance relationship.

[0092] Specifically, under the premise that the starting time points do not overlap, the time difference situations mainly include two types: the first situation is that the starting time point of the first vibration data is before the starting time point of the second vibration data, which means that the shortest distance from the vibration application position to the optical cable to be tested is less than the horizontal distance from the vibration application position to the vibration receiving device, and it is necessary to adaptively adjust the setting position of the vibration receiving device so that the vibration receiving device is close to the vibration application position;

[0093] The second situation is that the starting time point of the first vibration data is after the starting time point of the second vibration data, which means that the shortest distance from the vibration application position to the optical cable to be tested is greater than the horizontal distance from the vibration application position to the vibration receiving device, and it is necessary to adaptively adjust the setting position of the vibration receiving device to make the vibration receiving device away from the vibration application position;

[0094] During the above adjustment process, the vibration application position also continuously applies the detection vibration, so that the starting time point of the second vibration data can be continuously updated until a setting position is found that makes the starting time points of the first vibration data and the second vibration data coincide.

[0095] In a specific implementation of this embodiment, the initial setting position of the vibration receiving device can also be as close to the vibration application position as possible, and then the setting position of the vibration receiving device is continuously adjusted to make the vibration receiving device away from the vibration application position, and through continuous tapping, it is determined whether the starting time point of the second vibration data coincides with the starting time point of the first vibration data. If coincidence occurs, the adjustment of the vibration receiving device is stopped.

[0096] Further, in this embodiment, the adjustment of the setting position of the vibration receiving device may specifically include: adjusting the setting position of the vibration receiving device on a straight line connecting the vibration applying position and the vibration receiving device according to the distance relationship.

[0097] For the first time, a line is set between the setting position of the vibration receiving device and the vibration applying position, so that the adjustment of the vibration receiving device can be more conveniently achieved based on the straight line of the line, thereby facilitating the measurement of the horizontal distance between the vibration receiving device and the vibration applying position and reducing other parameters.

[0098] In a preferred implementation of this embodiment, in order to standardize on-site operations so as to better realize the measurement of the horizontal distance between the vibration receiving device and the vibration application position, and the application of the detection vibration, the straight line connecting the vibration application position and the vibration receiving device is perpendicular to the optical cable routing.

[0099] In this embodiment, a vibration receiving device is arranged on the ground to receive the detection vibration applied on the ground directly above the optical cable to be tested together with the optical cable to be tested, the second vibration data received by the vibration receiving device is compared with the first vibration data received by the optical cable to be tested, and the starting time points are compared. The vibration receiving device arranged on the ground is used as a measuring scale to find the setting position of the vibration receiving device that makes the starting time points of the first vibration data and the second vibration data coincide, and then the horizontal distance from the vibration receiving device to the vibration application position is measured as the burial depth of the optical cable to be tested at the corresponding position; in this embodiment, there is no need to measure the propagation speed of vibration, and only a vibration receiving device that can detect ground vibration and upload the corresponding vibration data and time information is needed to complete the measurement, and the measurement operation steps are simple and clear, which greatly improves the efficiency of the burial depth detection of the optical cable to be tested, and effectively reduces the equipment and operation costs of the detection.

[0100] Example 2

[0101] This embodiment and embodiment 1 are based on the same inventive concept. Figure 2As shown, this embodiment provides an optical cable buried depth detection system, the detection system comprising:

[0102] A vibration position positioning module 11 is used to determine a vibration application position according to the optical cable route of the optical cable to be tested, and apply a detection vibration at the vibration application position; the vibration application position is located directly above the optical cable route;

[0103] In this embodiment, the detection vibration may be a vibration of a certain preset frequency. By applying a vibration of a certain preset frequency as the detection vibration, the corresponding information of the detection vibration can be extracted more conveniently.

[0104] Specifically, in a preferred implementation manner of this embodiment, the detection vibration can be generated by knocking on the ground, and the corresponding equipment and operation are simple, and only a knocking tool such as a rubber hammer is needed to apply the detection vibration.

[0105] Furthermore, in this embodiment, in order to ensure the accuracy of the detected buried depth of the optical cable, the vibration application position is located directly above the optical cable route;

[0106] The acquisition of the vibration application position may specifically include:

[0107] In a direction intersecting with the optical cable route of the optical cable to be tested, positioning vibrations are applied to several ground positions respectively, and the vibration intensity of each positioning vibration is collected by a distributed optical fiber sensing device connected to the optical cable to be tested, and the positioning vibration with the largest vibration intensity is used as the vibration application position.

[0108] During the vibration propagation process, as the vibration propagation distance continues to increase, the vibration intensity will continue to decay. Then, at a certain position point on the optical cable to be tested, the positioning vibration with the maximum vibration intensity is detected, indicating that the vibration attenuation of the positioning vibration is the smallest, indicating that the straight-line distance between the ground position of the positioning vibration and the corresponding position point of the optical cable to be tested is the shortest, indicating that the ground position is located directly above the optical cable route. The positioning and determination of the vibration application position can be completed by connecting the distributed optical fiber sensing device of the optical cable to be tested without the need for additional equipment, and the operation is simple and convenient, which improves the detection efficiency and reduces the operating cost.

[0109] Among them, the distributed optical fiber sensing equipment may include but is not limited to DVS (Distributed Optical Fiber Vibration Sensing System), DAS (Distributed Optical Fiber Audio Sensing System), etc.; in a preferred implementation of this embodiment, the distributed optical fiber sensing equipment is set to DAS, which can directly detect the detection vibration and form the first vibration data.

[0110] In this embodiment, the positioning vibration can be a vibration with a preset amplitude. By applying a vibration with a preset amplitude as the positioning vibration, the amplitude of the applied positioning vibration is ensured to be the same, and the ground position of the positioning vibration with the maximum vibration intensity can be more conveniently obtained; wherein, the positioning vibration can be generated by a vibration generating device in the prior art that can generate vibrations of the same amplitude.

[0111] A first data acquisition module 12 is used to collect first vibration data formed by the detection vibration in the optical cable to be tested by means of a distributed optical fiber sensing device connected to the optical cable to be tested;

[0112] According to the vibration propagation principle, the detection vibration propagates in all directions. During the propagation process, the detection vibration is received by the optical cable to be tested buried underground. At the same time, in this embodiment, in the process of the vibration position positioning module 11 obtaining the vibration application position, the position point of the optical cable to be tested corresponding to the vibration application position can be further obtained through the distributed optical fiber sensing device. The distance from the vibration application position to the position point is the shortest distance from the vibration application position to the optical cable to be tested, that is, the burial depth of the optical cable to be tested. After receiving the detection vibration, the optical cable to be tested is received and processed by the distributed optical fiber sensing device connected to the optical cable to be tested to form the first vibration data.

[0113] A second data acquisition module 13 is used to collect second vibration data generated by the detection vibration on the ground through a vibration receiving device; the vibration receiving device is set at a ground position at a certain horizontal distance from the vibration application position;

[0114] In this embodiment, since the propagation direction of the detection vibration is to propagate in all directions, the detection vibration will not only propagate downward but also propagate along the ground during the propagation process. It can be received by the vibration receiving device set at a ground position at a certain horizontal distance from the vibration application position and form the second vibration data.

[0115] In a preferred implementation of this embodiment, the vibration receiving device may include a vibration collection unit, a data processing unit and a data uploading unit, the vibration collection unit is used to collect the second vibration data, the data processing unit is used to process the second vibration data so that the device can directly identify and display the second vibration data, and the data uploading unit is used to upload the processed second vibration data. It can be understood that in this embodiment, the vibration receiving device only needs to receive the detected vibration and upload it, so the structure of the vibration receiving device in this embodiment is very simple, thereby reducing the cost of production and use of the device.

[0116] A data alignment module 14, configured to align the first vibration data and the second vibration data according to time information in the first vibration data and the second vibration data;

[0117] Specifically, in this embodiment, the alignment is to set the first vibration data and the second vibration data on the same time axis according to the time information in the first vibration data and the second vibration data, and the chronological relationship between the first vibration data and the second vibration data can be clearly obtained through the time axis.

[0118] In this embodiment, the burial depth of the optical cable to be tested is mainly determined by comparing the first vibration data detected by the distributed optical fiber sensing device with the second vibration data detected by the vibration receiving device. In order to better compare the first vibration data and the second vibration data, it is necessary to put the first vibration data and the second vibration data on the same benchmark, that is, to align the first vibration data and the second vibration data. According to the relevant principle formula of vibration propagation, the data related to vibration include the propagation speed and propagation time of vibration. The propagation speed of vibration needs to be additionally measured. Therefore, in this embodiment, the time information is used as the basis for aligning the first vibration data and the second vibration data.

[0119] The time information in the first vibration data and the second vibration data may be generated by a time synchronization device, and both the distributed optical fiber sensing device and the vibration receiving device are equipped with the time synchronization device.

[0120] The distributed optical fiber sensing device and the vibration receiving device are respectively configured with time synchronization devices to generate the corresponding time information, so that the vibration receiving device can run detection separately from the distributed optical fiber sensing device. The vibration receiving device only needs to upload the second vibration data detected, thereby reducing the data interaction process and improving the detection efficiency.

[0121] In a preferred implementation of this embodiment, the time synchronization device includes a GPS unit. The GPS unit has a simple structure and can effectively obtain millisecond-level positioning time, thereby reducing the cost of the equipment while ensuring positioning accuracy.

[0122] Data calculation module 15,

[0123] Determine whether the start time points of the first vibration data and the second vibration data after alignment coincide with each other;

[0124] If they coincide, the horizontal distance between the vibration receiving device and the vibration applying position is taken as the buried depth of the optical cable to be tested;

[0125] If they do not overlap, adjust the setting position of the vibration receiving device, and re-apply the detection vibration according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position to obtain the buried depth of the optical cable to be tested.

[0126] In this embodiment, the starting time point represents the time point when the detection vibration is received. Figure 3 As shown, the first vibration data and the second vibration data are restored to the corresponding vibration intensity of the detection vibration, and the vibration intensity is displayed through a waveform, then the waveform corresponding to the detection vibration will appear at the time point when the detection vibration is received.

[0127] According to the propagation principle of vibration, vibration usually propagates around the vibration source. Within a certain small distance range, if the transmission medium is the same, the vibration propagation speed can be approximately regarded as equal. It can be understood that the vibration receiving device is set on the ground, and the optical cable to be tested is buried under the ground, so the propagation medium of the detection vibration when propagating to the vibration receiving device and the optical cable to be tested is the same, both of which are ground. It can be understood that the propagation speed of the detection vibration when propagating to the vibration receiving device and the optical cable to be tested is the same.

[0128] In this embodiment, since the first vibration data and the second vibration data are aligned in the same time axis, and the propagation speed of the detection vibration is the same, the time information in the first vibration data and the second vibration data actually reflects the distance from the vibration application position to the optical cable to be tested and the vibration receiving device, respectively. Therefore, the burial depth of the optical cable to be tested is obtained according to the start time point of the aligned first vibration data and the second vibration data, and the horizontal distance between the vibration receiving device and the vibration application position. Specifically:

[0129] If the start time points of the aligned first vibration data and the second vibration data coincide with each other, the horizontal distance between the vibration receiving device and the vibration applying position is used as the buried depth of the optical cable to be tested.

[0130] The optical cable to be tested is arranged below the ground, and the shortest distance from the vibration application position to the optical cable to be tested, that is, the buried depth, is difficult to measure. In this embodiment, if the starting time points of the first vibration data and the second vibration data after alignment coincide, under the premise of the same vibration propagation speed, the vertical distance from the vibration application position to the optical cable to be tested is the same as the horizontal distance from the vibration application position to the vibration receiving device, and since the vibration application position and the vibration receiving device are both located on the ground, the horizontal distance from the vibration application position to the vibration receiving device can be measured as the shortest distance from the vibration application position to the optical cable to be tested, that is, the buried depth of the optical cable to be tested can be obtained. In this embodiment, there is no need to measure the vibration propagation speed, the calculation is simple and accurate, and the efficiency of the buried depth detection calculation of the optical cable to be tested is effectively improved.

[0131] Furthermore, if the starting times of the first vibration data and the second vibration data after alignment do not overlap, the setting position of the vibration receiving device is adjusted according to the starting time points of the first vibration data and the second vibration data, and the detection vibration is reapplied until a setting position is found so that the starting time of the first vibration data and the second vibration data corresponding to the re-applied detection vibration overlaps.

[0132] Specifically, when the starting time points do not coincide, it means that the shortest distances from the vibration application position to the optical cable to be tested and the vibration receiving device are not equal. Since the vibration receiving device is set on the ground, the vibration receiving device can be used as a scale to measure the buried depth of the optical cable to be tested. By adjusting the setting position of the vibration receiving device, the starting time points of the first vibration data and the second vibration data are made to coincide.

[0133] When the starting time points do not overlap, the starting time points of the first vibration data and the second vibration data have a sequential relationship, and there is a certain time difference between the starting time points of the two. In this embodiment, the vibration receiving device can be adjusted in the following manner:

[0134] Obtain the time difference between the starting time points of the first vibration data and the second vibration data, obtain the distance relationship between the vibration application position and the vibration receiving device and the optical cable to be tested respectively according to the time difference, and adjust the setting position of the vibration receiving device according to the distance relationship.

[0135] Specifically, under the premise that the starting time points do not overlap, the time difference situations mainly include two types: the first situation is that the starting time point of the first vibration data is before the starting time point of the second vibration data, which means that the shortest distance from the vibration application position to the optical cable to be tested is less than the horizontal distance from the vibration application position to the vibration receiving device, and it is necessary to adaptively adjust the setting position of the vibration receiving device so that the vibration receiving device is close to the vibration application position;

[0136] The second situation is that the starting time point of the first vibration data is after the starting time point of the second vibration data, which means that the shortest distance from the vibration application position to the optical cable to be tested is greater than the horizontal distance from the vibration application position to the vibration receiving device, and it is necessary to adaptively adjust the setting position of the vibration receiving device to make the vibration receiving device away from the vibration application position;

[0137] During the above adjustment process, the vibration application position also continuously applies the detection vibration, so that the starting time point of the second vibration data can be continuously updated until a setting position is found that makes the starting time points of the first vibration data and the second vibration data coincide.

[0138] In a specific implementation of this embodiment, the initial setting position of the vibration receiving device can also be as close to the vibration application position as possible, and then the setting position of the vibration receiving device is continuously adjusted to make the vibration receiving device away from the vibration application position, and through continuous tapping, it is determined whether the starting time point of the second vibration data coincides with the starting time point of the first vibration data. If coincidence occurs, the adjustment of the vibration receiving device is stopped.

[0139] Further, in this embodiment, the adjustment of the setting position of the vibration receiving device may specifically include: adjusting the setting position of the vibration receiving device on a straight line connecting the vibration applying position and the vibration receiving device according to the distance relationship.

[0140] For the first time, a line is set between the setting position of the vibration receiving device and the vibration applying position, so that the adjustment of the vibration receiving device can be more conveniently achieved based on the straight line of the line, thereby facilitating the measurement of the horizontal distance between the vibration receiving device and the vibration applying position and reducing other parameters.

[0141] In a preferred implementation of this embodiment, in order to standardize on-site operations so as to better realize the measurement of the horizontal distance between the vibration receiving device and the vibration application position, and the application of the detection vibration, the straight line connecting the vibration application position and the vibration receiving device is perpendicular to the optical cable routing.

[0142] In this embodiment, a vibration receiving device is arranged on the ground to receive the detection vibration applied on the ground directly above the optical cable to be tested together with the optical cable to be tested, the second vibration data received by the vibration receiving device is compared with the first vibration data received by the optical cable to be tested, and the starting time points are compared. The vibration receiving device arranged on the ground is used as a measuring scale to find the setting position of the vibration receiving device that makes the starting time points of the first vibration data and the second vibration data coincide, and then the horizontal distance from the vibration receiving device to the vibration applying position is measured as the burial depth of the optical cable to be tested at the corresponding position; in this embodiment, there is no need to measure the propagation speed of vibration, and only a vibration receiving device that can detect ground vibration and upload the corresponding vibration data and time information is needed to complete the measurement, and the measurement operation is simple and clear, which greatly improves the efficiency of the burial depth detection of the optical cable to be tested, and effectively reduces the equipment and operation costs of the detection.

[0143] Example 3

[0144] like Figure 4 As shown, this embodiment provides an electronic device, which includes a memory 21 and a processor 22. The memory 21 stores computer-readable instructions, and the processor 22 executes the computer-readable instructions to implement the optical cable buried depth detection method described in this embodiment.

[0145] Preferably, the electronic device further includes a bus 23 and a communication interface 24 , and the processor 22 , the communication interface 24 and the memory 21 are connected via the bus 23 .

[0146] The memory 21 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 24 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 23 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus 23 may be divided into an address bus, a data bus, a control bus, etc. (not fully drawn in the figure).

[0147] The processor 22 may be an integrated circuit chip with signal processing capability. In the specific implementation process, each step in the above method embodiment may be completed by the hardware integrated logic circuit or software instructions in the processor 22. The above processor 22 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, which may implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor 22 may also be any conventional processor 22, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied as being executed by a hardware decoding processor, or may be executed by a combination of hardware and software modules in a decoding processor. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 21, and the processor 22 reads the information in the memory 21 and completes the steps of the method of the above embodiment in combination with its hardware.

[0148] An embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by the processor 22, the computer-executable instructions prompt the processor 22 to implement the above-mentioned optical cable buried depth detection method. The specific implementation can be found in the embodiment, which will not be repeated here.

[0149] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0150] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A method for detecting the buried depth of an optical cable, characterized in that: The method comprises: Determine a vibration application position according to the optical cable route of the optical cable to be tested, and apply a detection vibration at the vibration application position; the vibration application position is located directly above the optical cable route; By accessing the distributed optical fiber sensing device of the optical cable to be tested, collecting first vibration data formed by the detection vibration in the optical cable to be tested corresponding to the vibration application position; The second vibration data generated by the detection vibration on the ground is collected by a vibration receiving device; the vibration receiving device is arranged at a ground position at a certain horizontal distance from the vibration application position; aligning the first vibration data and the second vibration data according to time information in the first vibration data and the second vibration data; Determine whether the start time points of the first vibration data and the second vibration data after alignment coincide with each other; If they coincide, the horizontal distance between the vibration receiving device and the vibration applying position is taken as the buried depth of the optical cable to be tested; If they do not overlap, adjust the setting position of the vibration receiving device, and re-apply the detection vibration according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position to obtain the buried depth of the optical cable to be tested.

2. The method for detecting buried depth of optical cable according to claim 1, characterized in that: The step of determining the vibration application position according to the optical cable route of the optical cable to be tested specifically includes: In a direction intersecting with the optical cable route of the optical cable to be tested, positioning vibrations are applied to several ground positions respectively, the vibration intensity of each positioning vibration is collected through the optical cable to be tested, and the positioning vibration with the largest vibration intensity is used as the vibration application position.

3. The method for detecting buried depth of optical cable according to claim 1, characterized in that: The time information is generated by a time synchronization device; both the distributed optical fiber sensing device and the vibration receiving device are equipped with the time synchronization device.

4. The method for detecting buried depth of optical cable according to claim 1, characterized in that: The step of adjusting the setting position of the vibration receiving device, and reapplying the detection vibration according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position and obtaining the buried depth of the optical cable to be tested specifically includes: According to the starting time points of the first vibration data and the second vibration data, the setting position of the vibration receiving device is adjusted and the detection vibration is re-applied until a certain setting position is found so that the first vibration data and the second vibration data coincide with the starting time point corresponding to the re-application of the detection vibration.

5. The method for detecting buried depth of optical cable according to claim 4, characterized in that: The adjusting the setting position of the vibration receiving device according to the starting time points of the first vibration data and the second vibration data specifically includes: Obtain the time difference between the starting time points of the first vibration data and the second vibration data, obtain the distance relationship between the vibration application position and the vibration receiving device and the optical cable to be tested respectively according to the time difference, and adjust the setting position of the vibration receiving device according to the distance relationship.

6. The method for detecting buried depth of optical cable according to claim 5, characterized in that: The step of adjusting the setting position of the vibration receiving device according to the distance relationship specifically includes: According to the distance relationship, the setting position of the vibration receiving device is adjusted on the straight line where the connecting line between the vibration applying position and the vibration receiving device is located.

7. A method for detecting buried depth of optical cable according to any one of claims 1 to 6, characterized in that: The straight line connecting the vibration applying position and the vibration receiving device is perpendicular to the optical cable route.

8. An optical cable buried depth detection system, characterized in that: The detection system comprises: A vibration position positioning module, used for determining a vibration application position according to an optical cable route of the optical cable to be tested, and applying a detection vibration at the vibration application position; the vibration application position is located directly above the optical cable route; A first data acquisition module, which collects first vibration data formed by the detection vibration in the optical cable to be tested corresponding to the vibration application position by accessing the distributed optical fiber sensing device of the optical cable to be tested; A second data acquisition module is used to collect second vibration data generated by the detection vibration on the ground through a vibration receiving device; the vibration receiving device is set at a ground position at a certain horizontal distance from the vibration application position; A data alignment module, configured to align the first vibration data and the second vibration data according to time information in the first vibration data and the second vibration data; A data calculation module, used for determining whether the start time points of the first vibration data and the second vibration data after alignment coincide with each other; If they coincide, the horizontal distance between the vibration receiving device and the vibration applying position is taken as the buried depth of the optical cable to be tested; If they do not overlap, adjust the setting position of the vibration receiving device, and re-apply the detection vibration according to the horizontal distance between the adjusted setting position of the vibration receiving device and the vibration applying position to obtain the buried depth of the optical cable to be tested.

9. An electronic device, comprising a memory and a processor, characterized in that: The memory stores computer-readable instructions, and the processor executes the computer-readable instructions to implement the optical cable buried depth detection method described in any one of claims 1 to 7.

10. A computer storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed, the method for detecting the buried depth of an optical cable as described in any one of claims 1 to 7 is implemented.

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