Method, device, equipment and medium for determining the perpendicular distance of a vibration source from an optical fiber

Abstract

The present application relates to a method, device, equipment and medium for determining the vertical distance between a vibration source and an optical fiber, wherein the optical fiber is arranged in an optical cable protection area, and a plurality of optical fiber sensors are arranged along the arrangement direction of the optical fiber, the method comprising: obtaining a target vibration source type of a vibration source corresponding to an alarm event; obtaining a first vibration intensity detected by each sensor of each optical fiber sensor during the alarm event according to the target vibration source type; and determining the vertical distance between the vibration source and the optical fiber according to each first vibration intensity and a first corresponding relationship corresponding to the target vibration source type established in advance. Through the method of the present application, the attenuation characteristics of the vibration signal emitted by the vibration source when propagating in the soil are utilized to determine the vertical distance between the vibration source and the optical fiber in the optical fiber vibration early warning system.

Description

Technical Field

[0001] This invention relates to the fields of asset management and digital technology, and more specifically, to a method, apparatus, device, and medium for determining the vertical distance between a vibration source and an optical fiber. Background Technology

[0002] Fiber optic vibration early warning systems are widely used for early warning of third-party activities near linear facilities such as pipelines and communications lines that are not managed with perimeter walls. Compared with technical prevention measures such as installing video surveillance along the line and using drones for line inspection, fiber optic early warning systems offer all-weather, blind-spot-free, and full-coverage capabilities. Currently, fiber optic early warning systems can accurately determine the type of third-party activity and the distance of the activity (vibration source) along the fiber optic cable, but they cannot provide the perpendicular distance between the activity and the fiber optic cable. The third-party activities that truly affect the facility are construction activities located directly above the pipeline or within 5 meters of the fiber optic cable or pipeline. For a long time, fiber optic vibration early warning systems have not been able to provide information about the perpendicular distance between the vibration source and the fiber optic cable.

[0003] Traditional fiber optic vibration early warning technology determines the distance between the vibration source and the fiber optic cable by measuring the vibration intensity. However, low-intensity vibrations at close range and high-intensity vibrations at long distance may produce vibrations of equal intensity on the fiber optic system, leading to misjudgments of distance by the fiber optic vibration early warning system. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method, apparatus, device and medium for determining the vertical distance between a vibration source and an optical fiber, thereby solving at least one of the above-mentioned technical problems.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A method for determining the perpendicular distance between a vibration source and an optical fiber, wherein an optical fiber is installed in the optical cable protection zone, and multiple optical fiber sensors are installed along the direction of the optical fiber installation, the method comprising:

[0006] Obtain the target vibration source type corresponding to the vibration source when the alarm event occurs;

[0007] Based on the type of the target vibration source, obtain the first vibration intensity detected by each of the fiber optic sensors when an alarm event occurs;

[0008] Based on the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types, the vertical distance between the vibration source and the optical fiber is determined, wherein the first correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities, the vibration attenuation constant of the vibration source in the optical cable protection zone, and each of the vertical distances.

[0009] The beneficial effects of this invention are as follows: When an alarm event occurs, in the process of determining the vertical distance between the vibration source and the optical fiber, the present application utilizes the attenuation characteristics of the vibration signal emitted by the vibration source when it propagates in the soil to establish a first correspondence that can determine the vertical distance between the vibration source and the vibrating optical fiber, so as to realize the vertical distance judgment between the vibration source and the optical fiber in the optical fiber vibration early warning system, thereby improving the accuracy of the optical fiber early warning in locating the vibration source.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the aforementioned first correspondence includes a second correspondence and a third correspondence. The second correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities and the vibration attenuation constant under different vertical distances corresponding to the vibration attenuation constant of the optical cable protection zone. The third correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities and each vertical distance.

[0012] The determination of the vertical distance between the vibration source and the optical fiber based on the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types includes:

[0013] Based on each of the first vibration intensities, determine the matrix corresponding to each of the first vibration intensities;

[0014] Based on the matrix corresponding to each of the first vibration intensities and the second correspondence, determine the target power exponent corresponding to the matrix;

[0015] Based on the target power exponent and the third correspondence, the target vertical distance corresponding to the target power exponent is determined, and the target vertical distance is determined as the vertical distance between the vibration source and the optical fiber.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that, in the process of determining the vertical distance between the vibration source and the optical fiber, the target power exponent can be accurately determined based on the second correspondence. Since the target power exponent is only related to the vertical distance between the vibration source and the optical fiber, the target vertical distance can be accurately determined based on the target power exponent and the third correspondence.

[0017] Furthermore, the target vibration source type for obtaining the vibration source corresponding to the occurrence of the alarm event includes:

[0018] Obtain the vibration signal of the vibration source corresponding to the alarm event;

[0019] Determine the waterfall diagram corresponding to the vibration signal;

[0020] Based on the waterfall diagram and the preset classification model, the type of the target vibration source is determined;

[0021] Alternatively, obtain the first vibration curve corresponding to the time the alarm event occurs;

[0022] Based on the first vibration curve and the pre-stored vibration curves corresponding to each vibration source type, the target vibration source type of the vibration source corresponding to the alarm event is determined.

[0023] The advantage of adopting the above-mentioned further solutions is that the type of target vibration source can be determined in different ways to meet different practical needs.

[0024] Furthermore, the aforementioned optical cable protection zone includes multiple protection zones, each with a different vibration attenuation constant. The method further includes:

[0025] Obtain the target zone corresponding to the alarm event that occurred;

[0026] Based on the target defense zone, the vibration attenuation constant corresponding to the target defense zone is determined, and then the vibration attenuation constant corresponding to the optical cable defense zone is the vibration attenuation constant corresponding to the target defense zone.

[0027] The advantage of adopting the above-mentioned further solution is that, considering that different protection zones correspond to different vibration attenuation constants, before determining the vibration attenuation constant corresponding to the optical cable protection zone, it is necessary to first determine which protection zone corresponds to the alarm event, so as to make the determined vibration attenuation constant more accurate.

[0028] Furthermore, the first correspondence between the aforementioned target vibration source types is established in the following way:

[0029] Obtain the vibration attenuation constant corresponding to the optical cable protection zone under the target vibration source type, and use the vibration attenuation constant corresponding to the optical cable protection zone under the target vibration source type as the first vibration attenuation constant;

[0030] The intensity of the second vibration detected by each of the optical fiber sensors is obtained when the vibration source vibrates at different vertical distances according to the vibration mode corresponding to the target vibration source type in the optical cable protection zone.

[0031] Based on each of the second vibration intensities, a vibration intensity matrix is ​​determined. The number of rows in the vibration intensity matrix is ​​the number of each of the fiber optic sensors, and the number of columns is the number of vibration modes corresponding to each vibration source type. Each row in the vibration intensity matrix corresponds to the same fiber optic sensor, and each column corresponds to the vibration mode corresponding to the same vibration source type. For each element in the vibration intensity matrix, the element represents the ratio between the second vibration intensity detected by the fiber optic sensor corresponding to the row number of the element and the target vibration intensity when the vibration mode corresponding to the column number of the element occurs. The target vibration intensity is the vibration intensity detected by any of the fiber optic sensors other than the fiber optic sensor corresponding to the row number of the element.

[0032] Based on the vibration intensity matrix and the target vibration curve corresponding to the target vibration source type, the second correspondence and the third correspondence are determined. The target vibration curve characterizes the change in vibration intensity of the vibration source under the same vibration attenuation constant and different vertical distances.

[0033] The first correspondence is determined based on the second correspondence and the third correspondence.

[0034] The beneficial effect of adopting the above-mentioned further scheme is that the changes of each vibration intensity involved in the vibration intensity matrix must satisfy the target vibration curve corresponding to the pre-established target vibration source type, that is, satisfy the attenuation characteristics of the vibration signal when it propagates in the soil, so that the first correspondence can be accurately determined.

[0035] Furthermore, the vibration mode corresponding to the above-mentioned target vibration source type is any one of manual tapping, mechanical digging, or mechanical rotary tillage.

[0036] The beneficial effect of adopting the above-mentioned further solution is that the solution of this application can meet the vibration modes corresponding to different vibration source types.

[0037] Furthermore, the above methods also include:

[0038] The position of the vibration source is determined based on the vertical distance between the vibration source and the optical fiber and the position of the target sensor.

[0039] The advantage of adopting the above-mentioned further scheme is that, based on the accurate determination of the vertical distance between the vibration source and the optical fiber, the location of the vibration source can be accurately determined.

[0040] Secondly, to solve the above-mentioned technical problems, the present invention also provides a device for determining the perpendicular distance between a vibration source and an optical fiber. An optical fiber is installed in the optical cable protection zone, and multiple optical fiber sensors are arranged along the direction of the optical fiber installation. The device includes:

[0041] The target vibration source type acquisition module is used to acquire the target vibration source type of the vibration source corresponding to the alarm event.

[0042] The vibration intensity acquisition module is used to acquire the first vibration intensity detected by each of the fiber optic sensors when an alarm event occurs, based on the type of the target vibration source.

[0043] The vertical distance determination module is used to determine the vertical distance between the vibration source and the optical fiber based on the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types. The first correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities, the vibration attenuation constant of the vibration source in the optical cable protection zone, and each of the vertical distances.

[0044] Thirdly, in order to solve the above-mentioned technical problems, the present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the method of determining the vertical distance between the vibration source and the optical fiber as described in this application.

[0045] Fourthly, in order to solve the above-mentioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the method of determining the perpendicular distance between a vibration source and an optical fiber as described in this application.

[0046] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below.

[0048] Figure 1 This is a flowchart illustrating a method for determining the perpendicular distance between a vibration source and an optical fiber according to an embodiment of the present invention.

[0049] Figure 2 A schematic diagram illustrating the attenuation characteristics of a vibration signal propagating in soil, as provided in one embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of vibration curves of different vibration sources at the same distance, provided as an embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of vibration curves of the same vibration source at different distances, provided as an embodiment of the present invention.

[0052] Figure 5 A schematic diagram of optical cable protection zone division provided in one embodiment of the present invention;

[0053] Figure 6 A schematic diagram of a device for determining the perpendicular distance between a vibration source and an optical fiber, provided in an embodiment of the present invention;

[0054] Figure 7 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present invention. Detailed Implementation

[0055] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0056] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0057] The solution provided in this invention can be applied to any application scenario that requires determining the vertical distance between the vibration source and the optical fiber. The solution provided in this invention can be executed by any electronic device, such as a user's terminal device, including at least one of the following: smartphone, tablet, laptop, desktop computer, smart speaker, smartwatch, smart TV, or smart in-vehicle device.

[0058] This invention provides a possible implementation, such as... Figure 1 The diagram shows a flowchart of a method for determining the perpendicular distance between a vibration source and an optical fiber. This method can be executed by any electronic device, such as a terminal device, or by both a terminal device and a server. For ease of description, the method provided in this embodiment will be described below using a terminal device as the execution subject. Figure 1 The flowchart shown illustrates a fiber optic protection zone containing optical fibers, with multiple fiber optic sensors positioned along the fiber optic fiber's direction. The method may include the following steps:

[0059] Step S110: Obtain the target vibration source type corresponding to the vibration source when the alarm event occurs;

[0060] Step S120: Based on the type of the target vibration source, obtain the first vibration intensity detected by each of the fiber optic sensors when an alarm event occurs;

[0061] Step S130: Determine the vertical distance between the vibration source and the optical fiber according to the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types, wherein the first correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities, the vibration attenuation constant of the vibration source in the optical cable protection zone, and each of the vertical distances.

[0062] In the process of determining the vertical distance between the vibration source and the optical fiber when an alarm event occurs, this application utilizes the attenuation characteristics of the vibration signal emitted by the vibration source as it propagates in the soil to establish a primary correspondence that can determine the vertical distance between the vibration source and the vibrating optical fiber. This enables the optical fiber vibration early warning system to determine the vertical distance between the vibration source and the optical fiber, thereby improving the accuracy of the optical fiber early warning system in locating the vibration source.

[0063] The following specific embodiments further illustrate the solution of the present invention. In these embodiments, the principle of the attenuation characteristics of vibration signals propagating in soil is first explained. (See [link to relevant documentation]). Figure 2 Distributed optical fiber can be regarded as a number of vibration sensors (also called optical fiber sensors) uniformly installed along the optical fiber. The distance between each vibration sensor can be the same. When the vibration source vibrates, the distance between the vibration source and the perpendicular point of the optical fiber to receive the signal is the shortest, that is, L0 is the shortest. The distance between the signals received by the vibration sensors on both sides increases with the distance from the perpendicular point sensor, that is, the lengths of L1 and L3 are constantly increasing.

[0064] In a homogeneous medium, the vibration intensity of a vibration signal attenuates with increasing propagation distance according to the following formula:

[0065] I n =I*e -Kl

[0066] Among them, I n Let n be the vibration intensity received by the nth fiber optic sensor.

[0067] I represents the vibration intensity of the vibration source;

[0068] K is the vibration attenuation constant, which is related to the vibration frequency and soil properties, etc.

[0069] From the above formula, we can derive that the ratio of the vibration intensity received by sensor T1 to that received by sensor T0 is I1 / I0 = e -K(L1-L0) Therefore, when the vibration frequency and the vibration propagation medium remain constant, i.e., K remains constant, I1 / I0 is only related to L1-L0. Since the distance between sensors T0 and T1 remains constant, L1 is a correlation function of L0, and I1 / I0 is only related to L0.

[0070] Based on the principle expressed by the above formula, through experimental simulation, it can be determined that in a uniform medium, the influence of two factors—different vibration frequencies and different perpendicular distances between the vibration source and the optical fiber—on the vibration intensity curve can be obtained. Figure 3 The figure shows the results of dimensionless parameter processing of the vibration intensity curves on the optical fiber with different K values ​​(representing different vibration frequencies and soil properties) when the vibration source is located directly above the pipe. Figure 4 The figure shows the results of dimensionless parameter processing of the vibration intensity curves generated by the same vibration source vibrating at different vertical distances from the optical fiber.

[0071] Therefore, under the influence of three physical quantities—vibration source frequency, soil propagation characteristics, and vertical distance between the vibration source and the optical fiber—the vibration intensity received by the sensor T0-Tn will present a specific curve. By accumulating and training samples of this curve, the vertical distance between the vibration source and the optical fiber can be deduced from the vibration curve.

[0072] Based on the above principles, before implementing the scheme of this application, a first correspondence relationship is established, and the specific establishment process is as follows:

[0073] S11. First, establish a characteristic curve sample library. This library includes vibration curves corresponding to each protection zone within the optical cable protection zone under different vibration source types. For each vibration curve, the curve characterizes the change in vibration intensity of the vibration source under the same vibration attenuation constant and different vertical distances; that is, the correlation between the vibration curve, vibration source type (vibration frequency parameter), vibration source, and different vertical distances. The aforementioned characteristic curve sample library includes, for example... Figure 3 The first vibration curve shown is the vibration curve of different vibration sources at the same vertical distance. The above-mentioned characteristic curve sample library also includes, for example, the vibration curves of different vibration sources at the same vertical distance. Figure 4 The second vibration curve shown is the vibration curve of the same vibration source at different vertical distances.

[0074] S12, obtain the vibration attenuation constant corresponding to the optical cable protection zone under the target vibration source type, and use the vibration attenuation constant corresponding to the optical cable protection zone under the target vibration source type as the first vibration attenuation constant; optionally, the vibration mode corresponding to the target vibration source type is any one of manual knocking, mechanical digging or mechanical rotary tillage.

[0075] S13, obtain the second vibration intensity detected by each of the fiber optic sensors when the vibration source vibrates at different vertical distances according to the vibration mode corresponding to the target vibration source type in the optical cable protection zone. For example, there are T0 to T10 vibration intensities. n One fiber optic sensor, of which T n The last sensor whose vibration intensity value reaches the extractable range.

[0076] Select one fiber optic sensor from among the various fiber optic sensors as the target sensor. The target sensor can be any of the various fiber optic sensors. The second vibration intensity corresponding to the target sensor is taken as the target vibration intensity, denoted as T0. The second vibration intensities corresponding to the other fiber optic sensors besides the target sensor are denoted as T0. ij i is an integer greater than 0 and less than or equal to n, and j represents the vibration mode corresponding to the j-th vibration source type. For example, 1 represents manual knocking, 2 represents mechanical digging, and 3 represents mechanical rotary tillage.

[0077] S14, determine the vibration intensity matrix R based on each of the second vibration intensities and the target vibration intensity. ij The number of rows in the vibration intensity matrix is ​​equal to the number of each of the fiber optic sensors (e.g., T0 to T). n (Total n+1), the number of columns is the number of vibration modes corresponding to various vibration source types. Each row in the vibration intensity matrix corresponds to the same fiber optic sensor, and each column corresponds to the vibration mode corresponding to the same vibration source type. For each element in the vibration intensity matrix, the element represents the ratio between the second vibration intensity detected by the fiber optic sensor corresponding to the row number of the element and the target vibration intensity T0 when the vibration mode corresponding to the column number of the element occurs.

[0078] Among them, multiple vibration modes can correspond to a single vibration intensity matrix. As an example, R can be... ij =T ij / T0 is denoted as each element in the vibration intensity matrix, for example, R 11 =T 11 / T0 represents the second vibration intensity T detected by the T1 fiber optic sensor during manual tapping. 11 The ratio between the target vibration intensity T0 and the target vibration intensity T0.

[0079] S15, determine the second correspondence and the third correspondence based on the vibration intensity matrix and the target vibration curve corresponding to the target vibration source type. The target vibration curve characterizes the change of vibration intensity of the vibration source under the same vibration attenuation constant and different vertical distances.

[0080] The second correspondence can be determined by calculating the vibration intensity matrix R respectively. ij The y-th power (power exponent), vibration intensity matrix R ij The correspondence between the various power exponents, vibration attenuation constants, and the various vertical distances.

[0081] The calculation method is as follows: the y value is incremented in increments of 0.1, starting from 0 and increasing until R. ijThe corresponding vibration curve and the second vibration curve corresponding to the first vibration attenuation constant of the target vibration source type and the fiber optic defense zone in the characteristic curve sample library (the target vibration curve corresponding to the target vibration source type, Figure 4 The vibration curve shown matches the target vibration source type, indicating that the vibration signal propagates in the soil corresponding to the first vibration attenuation constant and satisfies the attenuation characteristics. The y-value at this point is denoted as y0 (target power exponent). The correspondence between y0 and the first vibration attenuation constant and each of the stated vertical distances is the third correspondence.

[0082] S16, determine the first correspondence relationship based on the second correspondence relationship and the third correspondence relationship.

[0083] Based on the same processing method as step S15 above, the vibration intensity matrix R can also be calculated separately. ij The value of x raised to the power of 0 is calculated as follows: x increases in increments of 0.1, starting from 0 and continuing until R. ij The corresponding vibration curve is the first vibration curve corresponding to the first vibration attenuation constant of the target vibration source type and fiber optic defense zone in the characteristic curve sample library. Figure 3 The vibration curve shown matches the vibration signal of the target vibration source type, indicating that the vibration signal propagates in the soil corresponding to the first vibration attenuation constant and satisfies the attenuation characteristics. The x value at this point is denoted as x0.

[0084] After the first correspondence is established, it can be combined with Figure 1 The steps shown below provide a detailed explanation of the method for determining the perpendicular distance between the vibration source and the optical fiber provided in this embodiment. This method includes the following steps:

[0085] Step S110: Obtain the target vibration source type corresponding to the vibration source when the alarm event occurs;

[0086] The target vibration source type refers to the vibration mode corresponding to the occurrence of an alarm event, such as manual knocking, mechanical digging, or mechanical rotary tillage. An alarm event refers to an event that affects the facility due to the occurrence of a vibration event corresponding to the target vibration source type. How to determine an alarm event can be based on existing technologies and will not be elaborated here. In this application, an alarm event can be determined based on a fiber optic early warning system.

[0087] Optionally, the target vibration source type for obtaining the vibration source corresponding to the occurrence of the alarm event includes:

[0088] The first method involves: acquiring the vibration signal of the vibration source corresponding to the alarm event; determining the waterfall plot corresponding to the vibration signal; and determining the target vibration source type based on the waterfall plot and a preset classification model.

[0089] Alternatively, the second approach is to obtain the first vibration curve corresponding to the occurrence of the alarm event; based on the first vibration curve and the pre-stored vibration curves corresponding to each vibration source type, determine the target vibration source type of the vibration source corresponding to the occurrence of the alarm event.

[0090] In the first method, the specific method for determining the waterfall plot corresponding to the vibration signal is as follows: the target vibration source type can be determined based on the waterfall plot and the preset classification model, which will not be elaborated here.

[0091] For the second method, one possible way to obtain the first vibration curve corresponding to the occurrence of the alarm event is to obtain the R value corresponding to the occurrence of the alarm event, and then obtain the first vibration curve corresponding to the occurrence of the alarm event by taking R to the power of x0.

[0092] It should be noted that the fiber optic protection zone may include multiple protection zones, each with a different vibration attenuation constant. The method also includes:

[0093] Obtain the target zone corresponding to the alarm event that occurred;

[0094] Based on the target defense zone, the vibration attenuation constant corresponding to the target defense zone is determined, and then the vibration attenuation constant corresponding to the optical cable defense zone is the vibration attenuation constant corresponding to the target defense zone.

[0095] Optionally, obtaining the target vibration source type of the vibration source corresponding to the alarm event includes determining the target protection zone where the vibration event is located based on the alarm mileage at the time of the alarm event; and then obtaining the target vibration source type of the vibration source corresponding to the target protection zone at the time of the alarm event.

[0096] Optionally, multiple zones within a fiber optic defense zone can be divided as follows: See Figure 5 The diagram showing the division of multiple defense zones indicates that a defense zone is divided at a set distance (e.g., 100 meters) along the ground direction of the optical cable. By default, the soil propagation characteristics are the same within the same defense zone, so the vibration attenuation constant corresponding to the same defense zone is the same.

[0097] Optionally, the method further includes: within each defense zone, selecting three points at vertical distances of 5 meters, 50 meters, and 200 meters from the optical fiber, respectively, and performing manual tapping, mechanical digging, and mechanical rotary tillage operations to generate vibration signals from typical vibration sources within the defense zone. Simultaneously, the vibration intensity data of the defense zone and the upstream and downstream optical fiber sensors are recorded and a waterfall diagram is generated. The optical fiber early warning system acquires real-time signals of changes in the refractive index of the optical fiber caused by soil vibration around the pipeline and converts these signals into corresponding waterfall diagrams. A perpendicular line is drawn from the vibration source to the optical fiber to obtain the location of the optical fiber closest to the vibration source. Based on the spatial coordinates of this optical fiber and the correspondence between the obtained coordinates and the optical fiber mileage, the mileage of the optical fiber is calculated. The corresponding waterfall diagram is then located based on the mileage and time information. The waterfall diagram refers to a method that uses color to represent the vibration intensity data calculated by each optical fiber sensor (also called a sensing channel) on the optical fiber in real time, with the optical fiber mileage as the horizontal axis and time as the vertical axis. Based on the waterfall plots obtained under various vibration modes at the same vertical distance, and under the same vibration mode at different vertical distances, the vibration intensity in each waterfall plot is processed into a normal distribution function to obtain various vibration curves in the characteristic curve sample library.

[0098] Optionally, when conducting vibration tests with different vibration modes, a meter-based control method can be used to eliminate the influence of cable coil length and other factors on the fiber optic early warning system. Specifically, this involves conducting tapping tests along the fiber optic cable to establish a precise correspondence between the cable's direction and mileage. The early warning system's alarm is based on the mileage of the fiber optic cable at the vibration source, while the pipeline management personnel's navigation system uses spatial coordinates. Therefore, it is necessary to tap the fiber optic cable at regular intervals (generally 50 meters) to generate a standard vibration signal. The tapping personnel record the tapping time and coordinates of the tapping point. The fiber optic early warning system provides the fiber optic mileage corresponding to the vibration point based on the tapping time. This establishes a correspondence between the mileage along the fiber optic cable and its spatial coordinates. When the fiber optic early warning system enters the formal operation phase, the system will automatically convert the alarm mileage value into the spatial coordinates used for navigation by pipeline management personnel. Specific tapping test requirements should comply with SY6827.

[0099] Step S120: Based on the type of the target vibration source, obtain the first vibration intensity detected by each of the fiber optic sensors when an alarm event occurs;

[0100] Step S130: Determine the vertical distance between the vibration source and the optical fiber, i.e. the vertical distance between the vibration source and the target sensor, based on the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types. The first correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities, the vibration attenuation constant of the vibration source in the optical cable protection zone, and each of the vertical distances.

[0101] Optionally, based on the scheme described above, the first correspondence relationship includes a second correspondence relationship and a third correspondence relationship. The second correspondence relationship is the correspondence between the target power exponent of the matrix corresponding to each first vibration intensity and the vibration attenuation constant under different vertical distances corresponding to the vibration attenuation constant of the optical cable protection zone. The third correspondence relationship is the correspondence between the target power exponent of the matrix corresponding to each first vibration intensity and each vertical distance.

[0102] The above-mentioned method of determining the vertical distance between the vibration source and the optical fiber based on the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types is as follows:

[0103] Based on each of the first vibration intensities, determine the matrix corresponding to each of the first vibration intensities;

[0104] Based on the matrix corresponding to each of the first vibration intensities and the second correspondence, determine the target power exponent corresponding to the matrix;

[0105] Based on the target power exponent corresponding to the matrix and the third correspondence, the target vertical distance corresponding to the target power exponent is determined, and the target vertical distance is determined as the vertical distance between the vibration source and the optical fiber.

[0106] One possible way to determine the matrix corresponding to each of the first vibration intensities is as follows: A target sensor is determined from among the various fiber optic sensors. Typically, according to the theory of homogeneous media, the target sensor receives the strongest vibration energy, so the sensor with the highest vibration intensity can be used as the target sensor. The first vibration intensity detected by the target sensor is then taken as the target vibration intensity. Then, the ratio between each of the first vibration intensities (excluding the target vibration intensity) and the target vibration intensity is calculated. Based on each ratio, the matrix corresponding to each of the first vibration intensities is obtained.

[0107] Optionally, if the target sensor cannot be determined according to the above homogeneous medium theory, another possible way to determine the target sensor is to take any one of the fiber optic sensors as the target sensor and take the first vibration intensity detected by the target sensor as the target vibration intensity.

[0108] Alternatively, before determining the vertical distance between the vibration source and the optical fiber, the target sensor can be estimated based on the positions of each sensor and the vibration source. Alternatively, any one of the sensors can be used as the target sensor, and the vertical distance between the vibration source and the optical fiber can be determined according to the scheme described later in this application. Alternatively, all of the sensors can be used as primary target sensors, and the vertical distance between the vibration source and the optical fiber can be determined according to the scheme described later in this application. After using each sensor as a primary target sensor, multiple vertical distances can be obtained, and the smallest vertical distance is taken as the vertical distance between the vibration source and the optical fiber.

[0109] It should be noted that, although in practice, due to the heterogeneity of the soil medium, the sensor with the highest vibration intensity may not be the one with the shortest distance, in order to ensure that the matrix Rij corresponding to each of the first vibration intensities is between 0 and 1, the fiber optic sensor with the largest vibration intensity value is generally selected as the target sensor, and the error caused by using the fiber optic sensor with the largest vibration intensity as the T0 sensor is ignored. In this case, the value of each element in the matrix corresponding to each of the first vibration intensities is between 0 and 1, which facilitates subsequent calculations.

[0110] Optionally, one possible way to determine the target exponent corresponding to the matrix based on the matrix corresponding to each of the first vibration intensities and the second correspondence is as follows:

[0111] Based on the matrices corresponding to each of the first vibration intensities and the second correspondence, the target power exponent corresponding to each matrix of the first vibration intensities is determined under different vertical distances and vibration attenuation constants corresponding to the optical cable protection zone. Here, the target power exponent refers to the y0 value corresponding to the vibration curve corresponding to the matrix when it matches the target vibration curve corresponding to the target vibration source type.

[0112] After determining the target power exponent corresponding to each of the first vibration intensities, the target vertical distance corresponding to the target power exponent can be determined based on the target power exponent and the third correspondence.

[0113] It should be noted that the vibration characteristic curve samples of each defense zone under different soil moisture contents can be continuously enriched by verifying parameters such as the type of vibration source and the distance between the vibration source and the optical fiber on site.

[0114] Optionally, after determining the vertical distance to the target, the position of the vibration source can also be determined based on the vertical distance between the vibration source and the optical fiber and the position of the target sensor.

[0115] The present invention, based on traditional fiber optic early warning technology, enables the fiber optic early warning system to determine the vertical distance to a vibration source. Compared to traditional fiber optic early warning technology, which can only provide alarm location based on fiber optic mileage, this invention can make a more accurate judgment on whether third-party construction has caused damage to the pipeline. The present invention has the following significant advantages over existing technologies:

[0116] (1) This invention establishes the correlation between vibration propagation characteristics and vibration curves in different soil types and frequencies by conducting knocking tests in the defense zone and within the defense zone, effectively solving the error caused by the difference in vibration frequency and propagation medium.

[0117] (2) Whether third-party construction poses a threat to the pipeline depends primarily on the location and type of the construction. This invention effectively integrates the propagation and attenuation characteristics of vibration waves in the soil, building upon traditional fiber optic early warning technology. This effectively solves the drawback of traditional fiber optic early warning systems, which can only rely on vibration intensity to determine the distance between the vibration source and the fiber optic cable. It addresses the problem that traditional fiber optic early warning systems cannot accurately determine the distance between the construction point and the fiber optic cable, greatly improving the accuracy of early warning.

[0118] Based on and Figure 1 Using the same principle as the method shown, this embodiment of the invention also provides a device 20 for determining the perpendicular distance between a vibration source and an optical fiber, such as... Figure 6 As shown, optical fibers are installed in the optical cable protection zone, and multiple optical fiber sensors are installed along the direction of the optical fibers. The device 20 for determining the perpendicular distance between the vibration source and the optical fiber may include a target vibration source type acquisition module 210, a vibration intensity acquisition module 220, and a perpendicular distance determination module 230, wherein:

[0119] The target vibration source type acquisition module 210 is used to acquire the target vibration source type of the vibration source corresponding to the alarm event.

[0120] The vibration intensity acquisition module 220 is used to acquire the first vibration intensity detected by each of the fiber optic sensors when an alarm event occurs, based on the target vibration source type.

[0121] The vertical distance determination module 230 is used to determine the vertical distance between the vibration source and the optical fiber according to the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types, wherein the first correspondence is the correspondence between the target power exponent of the matrix corresponding to each of the first vibration intensities, the vibration attenuation constant of the vibration source in the optical cable protection zone, and each of the vertical distances.

[0122] Optionally, the first correspondence relationship mentioned above includes a second correspondence relationship and a third correspondence relationship. The second correspondence relationship is the correspondence between the target power exponent of the matrix corresponding to each first vibration intensity and the vibration attenuation constant under different vertical distances corresponding to the vibration attenuation constant of the optical cable protection zone. The third correspondence relationship is the correspondence between the target power exponent of the matrix corresponding to each first vibration intensity and each vertical distance.

[0123] When the aforementioned vertical distance determination module 230 determines the vertical distance between the vibration source and the optical fiber based on the first correspondence between each of the first vibration intensities and the pre-established first correspondence between the target vibration source types, it is specifically used for:

[0124] Based on each of the first vibration intensities, determine the matrix corresponding to each of the first vibration intensities;

[0125] Based on the matrix corresponding to each of the first vibration intensities and the second correspondence, determine the target power exponent corresponding to the matrix;

[0126] Based on the target power exponent and the third correspondence, the target vertical distance corresponding to the target power exponent is determined, and the target vertical distance is determined as the vertical distance between the vibration source and the optical fiber.

[0127] Optionally, when the target vibration source type acquisition module 210 acquires the target vibration source type corresponding to the vibration source when the alarm event occurs, it is specifically used for the following purposes:

[0128] Obtain the vibration signal of the vibration source corresponding to the alarm event;

[0129] Determine the waterfall diagram corresponding to the vibration signal;

[0130] Based on the waterfall diagram and the preset classification model, the type of the target vibration source is determined;

[0131] Alternatively, obtain the first vibration curve corresponding to the time the alarm event occurs;

[0132] Based on the first vibration curve and the pre-stored vibration curves corresponding to each vibration source type, the target vibration source type of the vibration source corresponding to the alarm event is determined.

[0133] Optionally, the aforementioned optical cable protection zone includes multiple protection zones, each with a different vibration attenuation constant. The device further includes:

[0134] The target zone determination module is used to obtain the target zone corresponding to the occurrence of an alarm event; based on the target zone, the vibration attenuation constant corresponding to the target zone is determined, and the vibration attenuation constant corresponding to the optical cable zone is the vibration attenuation constant corresponding to the target zone.

[0135] Optionally, the first correspondence between the above-mentioned target vibration source types is established in the following way:

[0136] Obtain the vibration attenuation constant corresponding to the optical cable protection zone under the target vibration source type, and use the vibration attenuation constant corresponding to the optical cable protection zone under the target vibration source type as the first vibration attenuation constant;

[0137] The intensity of the second vibration detected by each of the optical fiber sensors is obtained when the vibration source vibrates at different vertical distances according to the vibration mode corresponding to the target vibration source type in the optical cable protection zone.

[0138] Based on each of the second vibration intensities, a vibration intensity matrix is ​​determined. The number of rows in the vibration intensity matrix is ​​the number of each of the fiber optic sensors, and the number of columns is the number of vibration modes corresponding to each vibration source type. Each row in the vibration intensity matrix corresponds to the same fiber optic sensor, and each column corresponds to the vibration mode corresponding to the same vibration source type. For each element in the vibration intensity matrix, the element represents the ratio between the second vibration intensity detected by the fiber optic sensor corresponding to the row number of the element and the target vibration intensity when the vibration mode corresponding to the column number of the element occurs. The target vibration intensity is the vibration intensity detected by any of the fiber optic sensors other than the fiber optic sensor corresponding to the row number of the element.

[0139] Based on the vibration intensity matrix and the target vibration curve corresponding to the target vibration source type, the second correspondence and the third correspondence are determined. The target vibration curve characterizes the change in vibration intensity of the vibration source under the same vibration attenuation constant and different vertical distances.

[0140] The first correspondence is determined based on the second correspondence and the third correspondence.

[0141] Optionally, the vibration mode corresponding to the above-mentioned target vibration source type is any one of manual tapping, mechanical digging, or mechanical rotary tillage.

[0142] Optionally, the above-mentioned device further includes:

[0143] The position determination module is used to determine the position of the vibration source based on the vertical distance between the vibration source and the optical fiber and the position of the target sensor.

[0144] The apparatus for determining the perpendicular distance between a vibration source and an optical fiber in this embodiment of the invention can execute the method for determining the perpendicular distance between a vibration source and an optical fiber provided in this embodiment of the invention. The implementation principles are similar. The actions performed by each module and unit in the apparatus for determining the perpendicular distance between a vibration source and an optical fiber in each embodiment of the invention correspond to the steps in the method for determining the perpendicular distance between a vibration source and an optical fiber in each embodiment of the invention. For detailed functional descriptions of each module of the apparatus for determining the perpendicular distance between a vibration source and an optical fiber, please refer to the descriptions of the corresponding methods for determining the perpendicular distance between a vibration source and an optical fiber shown above, which will not be repeated here.

[0145] The device for determining the vertical distance between the vibration source and the optical fiber can be a computer program (including program code) running on a computer device. For example, the device for determining the vertical distance between the vibration source and the optical fiber is an application software. The device can be used to execute the corresponding steps in the method provided in the embodiments of the present invention.

[0146] In some embodiments, the device for determining the vertical distance between a vibration source and an optical fiber provided in this invention can be implemented using a combination of hardware and software. As an example, the device for determining the vertical distance between a vibration source and an optical fiber provided in this invention can be a processor in the form of a hardware decoding processor, which is programmed to execute the method for determining the vertical distance between a vibration source and an optical fiber provided in this invention. For example, the processor in the form of a hardware decoding processor can be one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), or other electronic components.

[0147] In other embodiments, the device for determining the perpendicular distance between the vibration source and the optical fiber provided in this invention can be implemented in software. Figure 6 A device for determining the vertical distance between a vibration source and an optical fiber, stored in a memory, is shown. It may be software in the form of programs and plug-ins, and includes a series of modules, including a target vibration source type acquisition module 210, a vibration intensity acquisition module 220, and a vertical distance determination module 230, for implementing the method for determining the vertical distance between a vibration source and an optical fiber provided in the embodiments of the present invention.

[0148] The modules described in the embodiments of the present invention can be implemented in software or hardware. The names of the modules are not, in some cases, limiting the scope of the module itself.

[0149] Based on the same principles as the methods shown in the embodiments of the present invention, the embodiments of the present invention also provide an electronic device, which may include, but is not limited to: a processor and a memory; the memory for storing computer programs; and the processor for executing the methods shown in any embodiment of the present invention by invoking the computer programs.

[0150] In one alternative embodiment, an electronic device is provided, such as Figure 7 As shown, Figure 7 The illustrated electronic device 4000 includes a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, for example, via a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, which can be used for data interaction between the electronic device and other electronic devices, such as sending and / or receiving data. It should be noted that in practical applications, the transceiver 4004 is not limited to one type, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present invention.

[0151] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. Processor 4001 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0152] Bus 4002 may include a pathway for transmitting information between the aforementioned components. Bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 4002 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 7 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0153] The memory 4003 may be ROM (Read Only Memory) or other types of static storage devices capable of storing static information and instructions, RAM (Random Access Memory) or other types of dynamic storage devices capable of storing information and instructions, or EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0154] The memory 4003 stores the application code (computer program) for executing the present invention, and its execution is controlled by the processor 4001. The processor 4001 executes the application code stored in the memory 4003 to implement the content shown in the foregoing method embodiments.

[0155] Among these, electronic devices can also be terminal devices. Figure 7 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0156] This invention provides a computer-readable storage medium storing a computer program that, when run on a computer, enables the computer to execute the corresponding content in the aforementioned method embodiments.

[0157] According to another aspect of the present invention, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the method for determining the perpendicular distance between a vibration source and an optical fiber provided in the various embodiments described above.

[0158] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—and conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0159] It should be understood that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0160] The computer-readable storage medium provided in this invention can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0161] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to perform the method shown in the above embodiments.

[0162] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A method for determining the perpendicular distance between a vibration source and an optical fiber, characterized in that, The optical cable defense area is provided with optical fibers, and a plurality of optical fiber sensors are arranged along the arrangement direction of the optical fibers. The method comprises the following steps: obtaining a target vibration source type of a vibration source corresponding to an alarm event; obtaining a first vibration intensity detected by each sensor of the optical fiber sensors when the alarm event occurs according to the target vibration source type; determining a vertical distance between the vibration source and the optical fiber according to each first vibration intensity and a first corresponding relationship corresponding to the target vibration source type, wherein the first corresponding relationship comprises a second corresponding relationship and a third corresponding relationship, the second corresponding relationship is a corresponding relationship between a target power index of a matrix corresponding to each second vibration intensity and a vibration attenuation constant under different vertical distances and the vibration attenuation constant corresponding to the optical cable defense area, the third corresponding relationship is a corresponding relationship between the target power index of the matrix corresponding to each second vibration intensity and each vertical distance, and the first corresponding relationship corresponding to the target vibration source type is established by the following method: obtaining a vibration attenuation constant corresponding to the optical cable defense area under the target vibration source type, and taking the vibration attenuation constant corresponding to the optical cable defense area under the target vibration source type as a first vibration attenuation constant; obtaining a second vibration intensity detected by each optical fiber sensor when the vibration source vibrates at different vertical distances in a vibration mode corresponding to the target vibration source type in the optical cable defense area; determining a vibration intensity matrix according to each second vibration intensity, the number of rows of the vibration intensity matrix is the number of the optical fiber sensors, the number of columns is the number of vibration modes corresponding to each vibration source type, each row in the vibration intensity matrix corresponds to a same optical fiber sensor, each column corresponds to a vibration mode corresponding to a same vibration source type, and for each element in the vibration intensity matrix, the element represents a ratio between a second vibration intensity detected by an optical fiber sensor corresponding to a row number of the element and a target vibration intensity when a vibration mode corresponding to a column number of the element occurs, and the target vibration intensity is a vibration intensity detected by any sensor except the optical fiber sensor corresponding to the row number of the element in the optical fiber sensors; determining the second corresponding relationship and the third corresponding relationship according to the vibration intensity matrix and a target vibration curve corresponding to the target vibration source type, and the target vibration curve represents a change of vibration intensity of the vibration source under the same vibration attenuation constant and different vertical distances; determining the first corresponding relationship according to the second corresponding relationship and the third corresponding relationship.

2. The method of claim 1, wherein, The determination of the vertical distance between the vibration source and the optical fiber according to each first vibration intensity and the first corresponding relationship corresponding to the target vibration source type comprises: determining a matrix corresponding to each first vibration intensity according to each first vibration intensity; determining a target power index corresponding to the matrix according to the matrix corresponding to each first vibration intensity and the second corresponding relationship; and determining the target power index corresponding to the matrix according to the matrix corresponding to each first vibration intensity and the second corresponding relationship. According to the target power index and the third correspondence relationship, a target vertical distance corresponding to the target power index is determined, and the target vertical distance is determined as a vertical distance between the vibration source and the optical fiber.

3. The method of claim 1, wherein, The target vibration source type of the vibration source corresponding to the alarm event is obtained. A vibration signal of the vibration source corresponding to the alarm event is obtained. A waterfall chart corresponding to the vibration signal is determined. According to the waterfall chart and a preset classification model, the target vibration source type of the vibration source corresponding to the alarm event is determined. Alternatively, a first vibration curve corresponding to the alarm event is obtained. According to the first vibration curve and vibration curves corresponding to each vibration source type stored in advance, the target vibration source type of the vibration source corresponding to the alarm event is determined.

4. The method according to any one of claims 1 to 3, characterized in that, The optical cable protection area includes a plurality of protection areas, and each protection area corresponds to a different vibration attenuation constant. The method further includes: A target protection area corresponding to the alarm event is obtained. According to the target protection area, a vibration attenuation constant corresponding to the target protection area is determined, and the vibration attenuation constant of the optical cable protection area is the vibration attenuation constant corresponding to the target protection area.

5. The method according to any one of claims 1 to 3, characterized in that, The vibration mode corresponding to the target vibration source type is any one of manual knocking, mechanical excavation, or mechanical rotary plowing operation.

6. The method according to any one of claims 1 to 3, characterized in that, The method further includes: According to the vertical distance between the vibration source and the optical fiber and the position of a target sensor, the position of the vibration source is determined, and the target sensor is any one of the optical fiber sensors.

7. A device for determining the perpendicular distance between a vibration source and an optical fiber, characterized in that, The device adopts the method for determining the vertical distance between the vibration source and the optical fiber according to claim 1, and the optical cable protection area is provided with optical fibers, a plurality of optical fiber sensors are arranged along the arrangement direction of the optical fibers, and the device includes: A target vibration source type acquisition module is configured to obtain the target vibration source type of the vibration source corresponding to the alarm event. A vibration intensity acquisition module is configured to obtain a first vibration intensity detected by each sensor of the optical fiber sensors corresponding to the alarm event according to the target vibration source type. A vertical distance determination module is configured to determine the vertical distance between the vibration source and the optical fiber according to each first vibration intensity and a first correspondence relationship corresponding to the target vibration source type established in advance, wherein the first correspondence relationship is a correspondence relationship among a target power index of a matrix corresponding to each first vibration intensity, a vibration attenuation constant of the optical cable protection area corresponding to the vibration source, and each vertical distance.

8. An electronic device, comprising: The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the method in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the method in any one of claims 1-6.

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