CN118189820A - Vertical distance determining method, device, computer equipment and storage medium - Google Patents
Vertical distance determining method, device, computer equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a vertical distance determining method, a vertical distance determining device, computer equipment and a storage medium, and belongs to the field of pipeline detection. The vertical distance determining method comprises the following steps: acquiring a vibration signal space-time characteristic function of a pipeline; acquiring the first time when each acquisition section detects a vibration signal of a vibration source to be detected; and determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function. On the basis that the pipeline does not need to be provided with additional devices, the vertical distance between the pipeline and the vibration source to be detected is calculated, the positioning accuracy of the vibration source is improved, the threat of the vibration source to the pipeline can be rapidly judged, and the reliable operation of the pipeline is ensured.
Description
Technical Field
The present invention relates to the field of pipeline detection, and in particular, to a method and apparatus for determining a vertical distance, a computer device, and a storage medium.
Background
With the rapid development of energy technology, the coverage area of oil and gas pipelines for conveying oil and gas is continuously enlarged, and the oil and gas pipeline network of each area is also increasingly complicated. When maintenance construction operation is carried out in general, engineering equipment such as excavator can produce destructive vibration signal, and destructive vibration signal has threat to oil gas pipeline, causes pipeline leakage and cable fracture in the pipeline easily, and then influences pipeline transportation oil gas. Typically, a sensor for detecting vibration signals is provided in the pipe to provide an early warning of vibration signals generated around the pipe.
However, in determining the threat level of the vibration signal to the pipe, the distance of the pipe from the vibration source generating the vibration signal may affect the accuracy of the threat level obtained. When the vibration source is far from the pipeline, the vibration signal generated by the vibration source threatens the pipeline to a low degree, but the existence sensor erroneously determines the vibration signal with the low threat degree as a high threat signal. The vibration source has uncertainty in position because of the strong and sporadic randomness of the vibration signal generated by the vibration source. The sensor in the pipeline can not accurately determine the distance between the pipeline and the vibration source, so that the determined vibration signal has an accurate difference on the threat degree of the pipeline, and the false alarm rate of the pipeline is higher.
Disclosure of Invention
The embodiment of the invention aims to provide equipment which is used for solving the problem that the distance between a pipeline and a sensor cannot be accurately determined.
In order to achieve the above object, in a first aspect, the present application provides a vertical distance determining method, including:
acquiring a vibration signal space-time characteristic function of a pipeline, wherein the pipeline comprises a preset number of acquisition sections;
Acquiring the first time when each acquisition section detects a vibration signal of a vibration source to be detected;
And determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function.
With reference to the first aspect, in a first possible implementation manner, the obtaining a vibration signal space-time characteristic function of the pipeline includes:
obtaining a geometric relationship among a signal source, a first detection point of a pipeline and a second detection point of the pipeline, wherein the distance between the first detection point and the signal source is the shortest distance between the signal source and the pipeline;
And determining a vibration signal space-time characteristic function of the pipeline according to the geometric relation, the time when the first detection point detects the vibration signal sent by the signal source, the wave speed of the vibration signal sent by the signal source, the distance between the first detection point and the signal source, the position of the first detection point and the position of the second detection point.
With reference to the first aspect, in a second possible implementation manner, the determining the signal wave speed includes:
acquiring a second time when the distributed optical fiber sensor in each acquisition section detects a vibration signal of a preset vibration source;
And determining the signal wave speed of each acquisition section according to the second time and the vibration signal space-time characteristic function.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the determining a signal wave velocity of each acquisition section according to the second time and the vibration signal space-time characteristic function includes:
Determining a wave velocity value of each detection point in the acquisition section according to the second time and the vibration signal space-time characteristic function when the vibration signal of the preset vibration source is detected each time;
and carrying out average value calculation on the wave velocity values of all detection points in the acquisition section to obtain the signal wave velocity of the acquisition section.
With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner, the determining a signal wave velocity of each acquisition section according to the second time and the vibration signal space-time characteristic function includes:
Determining the burial depth of each acquisition section based on the position of the preset vibration source;
And determining the signal wave speed of each acquisition section according to the vibration signal space-time characteristic function, the second time, the burial depth and the position of each acquisition section.
With reference to the first aspect, in a fifth possible implementation manner, the determining, according to the first time, the vibration signal space-time characteristic function, and the signal wave speed of each acquisition section, a vertical distance between the pipeline and the vibration source to be measured includes:
Obtaining the vertical distance between each acquisition section and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, the signal wave speed of each acquisition section and the position of each acquisition section;
and carrying out average value calculation on the vertical distances between all the acquisition sections and the vibration source to be detected to obtain the vertical distance between the pipeline and the vibration source to be detected.
With reference to the first aspect, in a sixth possible implementation manner, after determining a vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, and the signal wave speed of each acquisition section, the method further includes:
Under the condition that the vibration signal of the vibration source to be measured is a destructive signal, determining the threat level of the vibration signal of the vibration source to be measured according to the vertical distance between the pipeline and the vibration source to be measured;
generating alarm information based on the vibration signal threat level and each of the acquisition zone locations.
In a second aspect, the present application provides a vertical distance determining apparatus comprising:
The characteristic function acquisition module is used for acquiring a vibration signal space-time characteristic function of the pipeline, wherein the pipeline comprises a preset number of acquisition sections;
The first time acquisition module is used for acquiring the first time when each acquisition section detects the vibration signal of the vibration source to be detected;
And the vertical distance determining module is used for determining the vertical distance between the pipeline and the vibration source to be detected according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function.
In a third aspect, the present application provides a computer device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, implements the vertical distance determination method according to the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the method for determining a vertical distance according to the first aspect is implemented.
The application provides a vertical distance determining method, which comprises the following steps: acquiring a vibration signal space-time characteristic function of a pipeline; acquiring the first time when each acquisition section detects a vibration signal of a vibration source to be detected; and determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function. On the basis that the pipeline does not need to be provided with additional devices, the vertical distance between the pipeline and the vibration source to be detected is calculated, the positioning accuracy of the vibration source is improved, the threat of the vibration source to the pipeline can be rapidly judged, and the reliable operation of the pipeline is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
Fig. 1 shows a flowchart of a vertical distance determination method provided by an embodiment of the present application;
FIG. 2 illustrates an exemplary diagram of a geometric relationship provided by an embodiment of the present application;
FIG. 3 is a graph illustrating an exemplary vibration signal spatiotemporal characteristic function provided by an embodiment of the present application;
fig. 4 shows a schematic structural diagram of a vertical distance determining apparatus according to an embodiment of the present application.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The terms "comprises," "comprising," "including," or any other variation thereof, are intended to cover a specific feature, number, step, operation, element, component, or combination of the foregoing, which may be used in various embodiments of the present invention, and are not intended to first exclude the presence of or increase the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the invention.
Example 1
Referring to fig. 1, fig. 1 shows a flowchart of a vertical distance determining method according to an embodiment of the present application. The vertical distance determination method in fig. 1 includes:
S110, acquiring a vibration signal space-time characteristic function of the pipeline.
A distributed fiber optic sensor is a device for testing and monitoring spatially distributed and time-varying information along an optical fiber transmission path within a conduit. The distributed optical fiber sensor is a receiving array of the pipeline, and the distributed optical fiber sensor in the pipeline can be equivalent to a plurality of sensors arranged side by side along the pipeline. When an external signal source vibrates, vibration signals of the signal source are transmitted to the distributed optical fiber sensor through a medium.
Since the vibration signal emitted by the signal source is an acoustic wave signal, the vibration signal of the signal source propagates at a fixed speed in the process of propagating the vibration signal of the signal source to the distributed optical fiber sensor through the medium. When a plurality of detection points in the pipeline receive vibration signals of the signal source, the vertical point closest to the signal source of the pipeline detects the vibration signals first. The farther the detection points on both sides of the vertical point are from the vertical point, the smaller the equiphase surfaces of the detection points are and the longer the time to detect the vibration signal is. The closer the detection points on both sides of the vertical point are to the vertical point, the larger the equiphase surfaces of the detection points are and the shorter the time to detect the vibration signal is.
The pipeline comprises a preset number of acquisition sections, wherein the preset number is determined according to actual requirements, and the method is not limited. Because the length of the pipeline is long, the geometric dimension of the pipeline relative to the ground is negligible, and the pipeline can be understood as consistent with the medium of the acquisition section, and the propagation speed of the vibration signal of the signal source along the medium is unchanged. At this time, a vibration signal space-time characteristic function of the pipeline is obtained according to the time relation between the position of the detection point and the detected vibration signal.
As an example, the acquiring a vibration signal spatiotemporal characteristic function of a pipe includes:
obtaining a geometric relationship among a signal source, a first detection point of a pipeline and a second detection point of the pipeline, wherein the distance between the first detection point and the signal source is the shortest distance between the signal source and the pipeline;
And determining a vibration signal space-time characteristic function of the pipeline according to the geometric relation, the time when the first detection point detects the vibration signal sent by the signal source, the wave speed of the vibration signal sent by the signal source, the distance between the first detection point and the signal source, the position of the first detection point and the position of the second detection point.
Referring to fig. 2, fig. 2 is a diagram illustrating an exemplary geometric relationship provided by an embodiment of the present application.
As shown, the point O is the position of the signal source, the point A is the position of the first detection point of the pipeline, and the point C is the position of the second detection point of the pipeline. The first detection point is the center point of the optical fiber of the pipeline relative to the signal source, namely, the distance between the first detection point and the signal source is the shortest distance between the signal source and the pipeline, and the first detection point detects the vibration signal of the signal source. The position of the signal source is used as a circle center, the distance between the first detection point and the signal source is used as a radius, a circular wave front is constructed, and the geometrical relationship among the signal source, the first detection point of the pipeline and the second detection point of the pipeline is obtained:
OA 2+AC2＝OC2 formula (1)
Wherein OA is the distance between the first detection point and the signal source, AC is the distance between the first detection point and the second detection point, and OC is the distance between the second detection point and the signal source.
Referring to fig. 3, fig. 3 is a diagram illustrating an exemplary spatiotemporal characteristic function of a vibration signal according to an embodiment of the present application.
And determining the distance between the first detection point and the center point of the optical fiber according to the position of the first detection point. And determining the distance between the second detection point and the center point of the optical fiber according to the position of the second detection point. Converting the distance in the geometric relationship into a relationship between speed and time to obtain:
H 2+(d-d0)2＝[H+v(t-t0)]2 formula (2)
The detection curve of the vibration signal detected by the distributed optical fiber sensor is transformed according to the formula (2). Converting the formula (2) into a method for determining a space-time characteristic function of the vibration signal of the pipeline by taking the time of the vibration signal sent by the signal source detected by the second detection point as a variable and according to the geometric relation, the time of the vibration signal sent by the signal source detected by the first detection point, the wave speed of the vibration signal sent by the signal source, the distance between the first detection point and the center point of the optical fiber, the distance between the second detection point and the center point of the optical fiber and the position of the second detection point:
Wherein t is the time when the second detection point detects the vibration signal sent by the signal source, t 0 is the time when the first detection point detects the vibration signal sent by the signal source, H is the distance between the first detection point and the signal source, d is the distance between the first detection point and the center point of the optical fiber, d 0 is the distance between the second detection point and the center point of the optical fiber, and V is the wave velocity of the vibration signal sent by the signal source. Because the position of the signal source has uncertainty, the vertical distance between the signal source and the pipeline can be calculated according to the parameters of the space-time characteristic function of the vibration signal.
S120, acquiring the first time when each acquisition section detects the vibration signal of the vibration source to be detected.
When impact excitation occurs on the periphery of the pipeline, the position of the vibration source to be tested, which causes the impact excitation, has uncertainty, and the distance between the vibration source to be tested and the pipeline cannot be directly determined. And acquiring the first time when each acquisition section detects the vibration signal of the vibration source to be detected, and determining the distance between the vibration source to be detected and the pipeline according to the first time and the wave speed of the vibration signal of the vibration source to be detected.
S130, determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section.
The signal wave velocity of each acquisition section is determined in advance by using a vibration signal space-time characteristic function, and the signal wave velocity is the wave velocity of the vibration signal propagating to the acquisition section along the medium. Because the medium of the acquisition section is consistent, the propagation wave speed of the vibration signal of the vibration source to be measured along the medium is equal to the signal wave speed. Substituting the first time and the signal wave speed of each acquisition section into a vibration signal space-time characteristic function, and determining the vertical distance between the pipeline and the vibration source to be measured. On the basis that the pipeline does not need to be provided with additional devices, the vertical distance between the pipeline and the vibration source to be detected is calculated, the positioning accuracy of the vibration source is improved, the threat of the vibration source to the pipeline can be rapidly judged, and the reliable operation of the pipeline is ensured.
It should be understood that, because the signal wave speed is affected by the medium, the determining process of the signal wave speed can be repeatedly executed each time the vertical distance between the pipeline and the vibration source to be measured is determined, which is not described herein.
As an example, the determining the signal wave velocity includes:
acquiring a second time when the distributed optical fiber sensor in each acquisition section detects a vibration signal of a preset vibration source;
And determining the signal wave speed of each acquisition section according to the second time and the vibration signal space-time characteristic function.
And setting a preset vibration source on the ground right above the optical fiber of each acquisition section, and acquiring a second time when the distributed optical fiber sensor in each acquisition section detects a vibration signal of the preset vibration source. Substituting the second time into the vibration signal space-time characteristic function to determine the signal wave speed of each acquisition section. The wave speed of the signal is the wave speed of the vibration signal of the preset vibration source, which is transmitted to the pipeline along the medium, and the wave speed of the vibration signal of the vibration source to be measured, which is transmitted along the medium, is equal to the wave speed of the signal because the medium of the acquisition section is consistent.
In an alternative example, said determining the signal wave velocity of each of said acquisition segments from said second time and said vibration signal spatiotemporal characteristic function comprises:
Determining the burial depth of each acquisition section based on the position of the preset vibration source;
And determining the signal wave speed of each acquisition section according to the vibration signal space-time characteristic function, the second time, the burial depth and the position of each acquisition section.
The burial depth of the acquisition section is the distance between the acquisition section and the ground. Because the preset vibration source is arranged right above the optical fiber of each acquisition section, the burial depth of each acquisition section can be determined based on the position of the preset vibration source. Specifically, the distance between the preset vibration source and the ground can be subtracted from the distance between the preset vibration source and the acquisition section to obtain the burial depth of the acquisition section. The distance between the preset vibration source and the acquisition section can also be directly determined as the burial depth of the acquisition section, and the method is not limited herein.
And determining an optical fiber center point of the pipeline, corresponding to the preset vibration source, based on the second time when each acquisition section detects the vibration signal of the preset vibration source, wherein the distance between the preset vibration source and the optical fiber center point is the shortest distance between the preset vibration source and the optical fiber. Based on the position of the acquisition section and the position of the optical fiber center point, the distance between the acquisition section and the optical fiber center point is obtained.
Substituting the second time, the burial depth and the distance between the acquisition section and the optical fiber center point into a vibration signal space-time characteristic function to obtain the signal wave speed of the acquisition section:
Wherein v is the signal wave velocity of each acquisition section, H is the burial depth of each acquisition section, deltat is the second time when each acquisition section detects the vibration signal of the preset vibration source, deltad is the distance between the acquisition section and the center point of the optical fiber.
In an alternative example, said determining the signal wave velocity of each of said acquisition segments from said second time and said vibration signal spatiotemporal characteristic function comprises:
Determining a wave velocity value of each detection point in the acquisition section according to the second time and the vibration signal space-time characteristic function when the vibration signal of the preset vibration source is detected each time;
and carrying out average value calculation on the wave velocity values of all detection points in the acquisition section to obtain the signal wave velocity of the acquisition section.
In the process of determining the signal wave speed of the acquisition section, the preset vibration source can send a plurality of groups of weight excitation vibration signals, wherein each group of weight excitation vibration signals comprises a primary vibration signal. The vibration signal is an excitation signal, and each time the vibration signal of the preset vibration source is detected, the wave speed value of each detection point in the acquisition section is determined according to the second time and the space-time characteristic function of the vibration signal. And detecting a plurality of groups of vibration signals of a preset vibration source, and obtaining a plurality of wave speed values of each detection point in the acquisition section.
And carrying out average value calculation on a plurality of wave velocity values of all detection points in the acquisition section to obtain the signal wave velocity of the acquisition section. Specifically, a plurality of wave velocity values of all detection points in the acquisition section are weighted and averaged to obtain the signal wave velocity of the acquisition section. And the average value calculation is carried out on the obtained wave velocity values, so that the accuracy of the obtained signal wave velocity is improved, and the accuracy of the vertical distance between the obtained pipeline and the vibration source to be measured is further improved.
As an example, the determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section includes:
Obtaining the vertical distance between each acquisition section and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, the signal wave speed of each acquisition section and the position of each acquisition section;
and carrying out average value calculation on the vertical distances between all the acquisition sections and the vibration source to be detected to obtain the vertical distance between the pipeline and the vibration source to be detected.
And determining the optical fiber center point of the pipeline corresponding to the vibration source to be measured based on the first time when each acquisition section detects the vibration signal of the vibration source to be measured, wherein the distance between the vibration source to be measured and the optical fiber center point is the shortest distance between the vibration source to be measured and the optical fiber. Based on the position of the acquisition section and the position of the optical fiber center point, the distance between the acquisition section and the optical fiber center point is obtained.
Substituting the first time, the signal wave speed of each acquisition section and the distance between each acquisition section and the center point of the optical fiber into the vibration signal space-time characteristic function to obtain the vertical distance between each acquisition section and the vibration source to be measured:
wherein H is the vertical distance between each acquisition section and the vibration source to be detected, deltad is the distance between each acquisition section and the center point of the optical fiber, deltat is the first time when each acquisition section detects the vibration signal of the vibration source to be detected, and v is the signal wave velocity of each acquisition section.
As an example, after determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, the method further includes:
Under the condition that the vibration signal of the vibration source to be measured is a destructive signal, determining the threat level of the vibration signal of the vibration source to be measured according to the vertical distance between the pipeline and the vibration source to be measured;
generating alarm information based on the vibration signal threat level and each of the acquisition zone locations.
The types of vibration signals of the vibration source to be measured can be classified into destructive signals and non-destructive signals. The destructive signal may be a vibration signal generated when engineering equipment such as an excavator is operated, and the non-destructive signal may be a vibration signal generated when a heavy vehicle such as a truck is driven, and will not be described herein. And under the condition that the vibration signal of the vibration source to be measured is a destructive signal, determining the threat level of the vibration signal of the vibration source to be measured according to the vertical distance between the pipeline and the vibration source to be measured. The higher the threat level of the vibration signal, the easier it is to send the vibration signal resulting in a failure damage condition of the pipeline.
Based on the threat level of the vibration signal and the position of each acquisition section, generating alarm information, alarming the vibration signal with destructive property, which is closer to the pipeline, and prompting maintenance to detect and maintain the pipeline by utilizing the alarm information, so that the pipeline is prevented from being damaged by faults and can not reliably run.
In the process of detecting the threat of the vibration signal to the pipeline, processing algorithms such as machine learning, deep learning and the like are not needed, and the speed of calculating the vertical distance between the pipeline and the vibration source to be detected is improved. The calculated vertical distance has high timeliness, and further, the threat of the vibration signal to the pipeline can be detected in real time. In addition, according to the vertical distance between the pipeline and the vibration source to be tested, when the nondestructive distance from the pipeline is determined to be relatively close, alarm information can not be generated, so that the false alarm rate is reduced.
The application provides a vertical distance determining method, which comprises the following steps: acquiring a vibration signal space-time characteristic function of a pipeline; acquiring the first time when each acquisition section detects a vibration signal of a vibration source to be detected; and determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function. On the basis that the pipeline does not need to be provided with additional devices, the vertical distance between the pipeline and the vibration source to be detected is calculated, the positioning accuracy of the vibration source is improved, the threat of the vibration source to the pipeline can be rapidly judged, and the reliable operation of the pipeline is ensured.
Example 2
Referring to fig. 4, fig. 4 is a schematic structural diagram of a vertical distance determining apparatus according to an embodiment of the present application. The vertical distance determining apparatus 200 in fig. 4 includes:
A characteristic function obtaining module 210, configured to obtain a spatial-temporal characteristic function of a vibration signal of a pipeline, where the pipeline includes a preset number of acquisition sections;
A first time acquisition module 220, configured to acquire a first time when each of the acquisition sections detects a vibration signal of a vibration source to be measured;
The vertical distance determining module 230 is configured to determine a vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, and a signal wave speed of each acquisition section, where the signal wave speed is determined by using the vibration signal space-time characteristic function.
As an example, the characteristic function obtaining module 210 includes:
The geometrical relationship acquisition sub-module is used for acquiring geometrical relationships among a signal source, a first detection point of a pipeline and a second detection point of the pipeline, wherein the distance between the first detection point and the signal source is the shortest distance between the signal source and the pipeline;
And the space-time characteristic function determining submodule is used for determining the space-time characteristic function of the vibration signal of the pipeline according to the geometric relation, the time when the first detection point detects the vibration signal sent by the signal source, the wave speed of the vibration signal sent by the signal source, the distance between the first detection point and the signal source, the position of the first detection point and the position of the second detection point.
As an example, the vertical distance determining apparatus 200 further includes:
the second time acquisition module is used for acquiring the second time when the distributed optical fiber sensor in each acquisition section detects the vibration signal of the preset vibration source;
and the signal wave speed determining module is used for determining the signal wave speed of each acquisition section according to the second time and the vibration signal space-time characteristic function.
In an alternative example, the signal wave speed determining module includes:
The wave velocity value determining submodule is used for determining the wave velocity value of each detection point in the acquisition section according to the second time and the vibration signal space-time characteristic function when the vibration signal of the preset vibration source is detected each time;
And the wave speed average value calculation sub-module is used for carrying out average value calculation on the wave speed values of all detection points in the acquisition section to obtain the signal wave speed of the acquisition section.
In an alternative example, the signal wave speed determining module includes:
The embedded depth determining submodule is used for determining the embedded depth of each acquisition section based on the position of the preset vibration source;
And the signal wave speed sub-module is used for determining the signal wave speed of each acquisition section according to the vibration signal space-time characteristic function, the second time, the burial depth and the position of each acquisition section.
As one example, the vertical distance determination module 230 includes:
The vertical distance obtaining submodule is used for obtaining the vertical distance between each acquisition section and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, the signal wave speed of each acquisition section and the position of each acquisition section;
And the distance average value calculation sub-module is used for carrying out average value calculation on the vertical distances between all the acquisition sections and the vibration source to be measured to obtain the vertical distance between the pipeline and the vibration source to be measured.
As an example, the vertical distance determining apparatus 200 further includes:
The threat level determining module is used for determining the threat level of the vibration signal of the vibration source to be detected according to the vertical distance between the pipeline and the vibration source to be detected under the condition that the vibration signal of the vibration source to be detected is a destructive signal;
and the alarm information generation module is used for generating alarm information based on the threat level of the vibration signal and the position of each acquisition section.
The vertical distance determining device 200 is configured to perform the corresponding steps in the above-described vertical distance determining method, and specific implementation of each function is not described herein. Further, the alternative example in embodiment 1 is also equally applicable to the vertical distance determination device 200 of embodiment 2.
The embodiment of the application also provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program realizes the vertical distance determining method in the embodiment 1 when the computer program is executed by the processor.
The characteristic function acquiring module 210, the first time acquiring module 220, the vertical distance determining module 230, and the like in the present embodiment are all stored as program units in the memory, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the problem that the distance between the pipeline and the sensor cannot be accurately determined is solved by adjusting the parameters of the inner core.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the vertical distance determination method described in embodiment 1.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer-readable storage media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. A vertical distance determination method, comprising:
acquiring a vibration signal space-time characteristic function of a pipeline, wherein the pipeline comprises a preset number of acquisition sections;
Acquiring the first time when each acquisition section detects a vibration signal of a vibration source to be detected;
And determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function.
2. The vertical distance determination method according to claim 1, wherein the acquiring the vibration signal spatiotemporal characteristic function of the pipe comprises:
obtaining a geometric relationship among a signal source, a first detection point of a pipeline and a second detection point of the pipeline, wherein the distance between the first detection point and the signal source is the shortest distance between the signal source and the pipeline;
And determining a vibration signal space-time characteristic function of the pipeline according to the geometric relation, the time when the first detection point detects the vibration signal sent by the signal source, the wave speed of the vibration signal sent by the signal source, the distance between the first detection point and the signal source, the position of the first detection point and the position of the second detection point.
3. The vertical distance determination method according to claim 1, wherein the signal wave velocity determination process includes:
acquiring a second time when the distributed optical fiber sensor in each acquisition section detects a vibration signal of a preset vibration source;
And determining the signal wave speed of each acquisition section according to the second time and the vibration signal space-time characteristic function.
4. A vertical distance determination method according to claim 3, wherein said determining the signal wave velocity of each of said acquisition segments from said second time and said vibration signal spatiotemporal characteristic function comprises:
Determining a wave velocity value of each detection point in the acquisition section according to the second time and the vibration signal space-time characteristic function when the vibration signal of the preset vibration source is detected each time;
and carrying out average value calculation on the wave velocity values of all detection points in the acquisition section to obtain the signal wave velocity of the acquisition section.
5. A vertical distance determination method according to claim 3, wherein said determining the signal wave velocity of each of said acquisition segments from said second time and said vibration signal spatiotemporal characteristic function comprises:
Determining the burial depth of each acquisition section based on the position of the preset vibration source;
And determining the signal wave speed of each acquisition section according to the vibration signal space-time characteristic function, the second time, the burial depth and the position of each acquisition section.
6. The method according to claim 1, wherein determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, and the signal wave velocity of each of the acquisition sections comprises:
Obtaining the vertical distance between each acquisition section and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, the signal wave speed of each acquisition section and the position of each acquisition section;
and carrying out average value calculation on the vertical distances between all the acquisition sections and the vibration source to be detected to obtain the vertical distance between the pipeline and the vibration source to be detected.
7. The method according to claim 1, wherein after determining the vertical distance between the pipeline and the vibration source to be measured according to the first time, the vibration signal space-time characteristic function, and the signal wave velocity of each of the acquisition sections, further comprises:
Under the condition that the vibration signal of the vibration source to be measured is a destructive signal, determining the threat level of the vibration signal of the vibration source to be measured according to the vertical distance between the pipeline and the vibration source to be measured;
generating alarm information based on the vibration signal threat level and each of the acquisition zone locations.
8. A vertical distance determining apparatus, comprising:
The characteristic function acquisition module is used for acquiring a vibration signal space-time characteristic function of the pipeline, wherein the pipeline comprises a preset number of acquisition sections;
The first time acquisition module is used for acquiring the first time when each acquisition section detects the vibration signal of the vibration source to be detected;
And the vertical distance determining module is used for determining the vertical distance between the pipeline and the vibration source to be detected according to the first time, the vibration signal space-time characteristic function and the signal wave speed of each acquisition section, wherein the signal wave speed is determined by utilizing the vibration signal space-time characteristic function.
9. A computer device, characterized in that it comprises a memory and a processor, the memory storing a computer program which, when executed by the processor, implements the vertical distance determination method according to any of claims 1 to 7.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the vertical distance determination method according to any of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310083251.XA CN118189820A (en) | 2023-01-17 | 2023-01-17 | Vertical distance determining method, device, computer equipment and storage medium |
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| CN202310083251.XA CN118189820A (en) | 2023-01-17 | 2023-01-17 | Vertical distance determining method, device, computer equipment and storage medium |
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| CN202310083251.XA Pending CN118189820A (en) | 2023-01-17 | 2023-01-17 | Vertical distance determining method, device, computer equipment and storage medium |
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