Optical fiber sound wave vibration DAS big data processing system

Abstract

The invention relates to the technical field of data processing, and discloses an optical fiber sound wave vibration DAS big data processing system, which comprises a data acquisition unit, a preprocessing unit, a data processing unit, an intelligent regulation and control unit and a background monitoring unit, and the data acquisition unit is used for acquiring amplitude, phase, amplitude and time data of signal data generated by the optical fiber acoustic vibration DAS system during operation. Through formula algorithm analysis, secondary filtering noise reduction processing is carried out on unprocessed signal data, so that the amplitude of noise can be effectively reduced, the signal-to-noise ratio is further improved, and the signal quality is effectively improved. Further, whether sound wave vibration occurs on the optical fiber is effectively judged through formula algorithm analysis, and when sound wave vibration occurs, a performance regulation and control module is triggered, so that the power consumption of a built-in data processor of the optical fiber sound wave vibration DAS big data processing system can be improved, the performance of the optical fiber sound wave vibration DAS big data processing system can be enhanced, and calculation and processing tasks can be executed more quickly.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and more specifically discloses an optical fiber acoustic wave vibration DAS big data processing system. Background Art

[0002] In recent years, with the rapid development of oil and gas pipelines, high-speed railways, large buildings, etc., their safety has received more and more attention from all walks of life. Distributed optical fiber sensing technology has the ability to obtain distributed information of temperature, strain and vibration along the line in real time, and can monitor leakage, external damage prevention, settlement deformation and cleaning tracking monitoring along the line in real time, and clearly indicate the location information of abnormal points along the line, becoming a key technology for external information perception in long-distance and harsh environments. However, in the surrounding environment where the optical fiber is arranged, many noise signals are often generated, and the image signal quality is reduced. At the same time, when sound waves vibrate on the optical fiber, a large amount of information data will be generated in a short time. The calculation and processing of massive information data will seriously affect the operation efficiency of the system. Summary of the invention

[0003] The present invention mainly provides an optical fiber acoustic vibration DAS big data processing system, which can solve the problem that many noise signals and image signal quality are often generated in the surrounding environment of optical fiber arrangement. At the same time, when acoustic wave vibration occurs on the optical fiber, a large amount of information data will be generated in a short time. The calculation and processing of massive information data will seriously affect the operation efficiency of the system.

[0004] To solve the above technical problems, according to one aspect of the present invention, more specifically, a fiber acoustic vibration DAS big data processing system includes: a data acquisition unit, a pre-processing unit, a data processing unit, an intelligent control unit and a background monitoring unit, wherein;

[0005] Data acquisition unit: used to collect the amplitude, phase, amplitude and time data of the signal data generated by the optical fiber acoustic vibration DAS system during operation;

[0006] Pre-processing unit: used to pre-process the information data collected by the data acquisition unit, normalize and filter the signal data, and store the pre-processed data;

[0007] Data processing unit: used to process and analyze the information data stored in the data storage module, and obtain the processing and analysis results, and can generate a big data processing report based on the processing and analysis results, and at the same time, can issue control instructions to the intelligent control unit based on the processing and analysis results;

[0008] Intelligent control unit: used to perform corresponding control operations on the optical fiber acoustic vibration DAS big data processing system according to the control instructions issued by the data processing unit;

[0009] Background monitoring unit: used to display the data collected and received by the pre-processing unit and the data processing unit in real time, and can also remotely control the modules in the fiber optic acoustic vibration DAS big data processing system.

[0010] Furthermore, the data acquisition unit includes: an amplitude acquisition module, a phase acquisition module, an amplitude acquisition module and a time acquisition module;

[0011] Amplitude acquisition module: used to collect information data of the signal amplitude generated during the operation of the optical fiber acoustic vibration DAS system;

[0012] Phase acquisition module: used to collect information data of signal phase values ​​generated during the operation of the optical fiber acoustic wave vibration DAS system;

[0013] Amplitude acquisition module: used to collect information data on the acoustic vibration amplitude generated during the operation of the optical fiber acoustic vibration DAS system;

[0014] Time acquisition module: used to collect the time information data of the pulse laser emitting light pulses to the optical fiber and the time information data of the photoelectric detector receiving the backscattered light and converting it into an electrical signal during the operation of the optical fiber acoustic vibration DAS system.

[0015] Furthermore, the pre-processing unit includes: a filtering processing module, a normalization module and a data storage module;

[0016] Filter processing module: used to filter out specific band frequencies in the signal;

[0017] Normalization module: used to eliminate the amplitude differences between different signals;

[0018] Data storage module: used to store information data processed by the filtering processing module and the normalization module.

[0019] Furthermore, the data processing unit includes: a data acquisition module, an analysis and judgment module, an instruction issuing module and a report generating module;

[0020] Data acquisition module: used to acquire the information data stored in the data storage module in real time;

[0021] Analysis and judgment module: used to analyze and judge the information data obtained by the data acquisition module, so as to obtain the results of the analysis and judgment;

[0022] Instruction issuing module: when an abnormal situation occurs in the analysis and judgment results, it will issue control instructions to the intelligent control unit to automatically control the optical fiber acoustic vibration DAS big data processing system according to the analysis and judgment results;

[0023] Report generation module: used to generate a processing report of the fiber optic acoustic vibration DAS big data processing system based on the results of analysis and judgment.

[0024] Furthermore, the intelligent control unit includes: an instruction receiving module, a performance control module and an intelligent noise reduction module;

[0025] Instruction receiving module: used to receive the instruction information issued by the instruction issuing module, and perform corresponding instruction control operations on the optical fiber acoustic wave vibration DAS big data processing system;

[0026] Performance control module: used to improve the operating power consumption of the built-in data processor of the optical fiber acoustic vibration DAS big data processing system;

[0027] Intelligent noise reduction module: used to reduce the noise of information data generated during the operation of the fiber optic acoustic vibration DAS system.

[0028] Furthermore, when the normalization module processes the signal amplitude, the normalized signal amplitude is:

[0029] X norm =(XX min ) / (X max -X min )

[0030] Among them, X norm is the normalized signal amplitude, X is the amplitude of the original signal to be normalized, X min is the minimum amplitude in the signal, X max is the maximum amplitude in the signal.

[0031] Furthermore, when analyzing and judging the data, the analysis and judgment module can obtain the data of the maximum acoustic vibration amplitude reached by the disturbance signal point and the maximum acoustic vibration amplitude generated by different types of noise signals from the data acquisition module, and can analyze the signal-to-noise ratio in the data transmission process based on the above acquired data. If:

[0032]

[0033] This means that the signal quality during data transmission is higher, where SNR is the signal-to-noise ratio, N is the number of disturbance signal points, and V i is the maximum acoustic vibration amplitude reached by the ith disturbance signal point, M is the type of noise signal generated by environmental factors, system noise or interference source factors in addition to the effective disturbance signal, V k is the maximum acoustic vibration amplitude generated by the kth noise signal, SNR e is the preset rated signal-to-noise ratio threshold parameter.

[0034] Furthermore, when analyzing and judging the data, the analysis and judgment module can obtain the phase value data of the signal from the data acquisition module, and can comprehensively analyze whether the acoustic wave vibration occurs on the optical fiber. If:

[0035]

[0036] This means that no acoustic vibration occurs on the optical fiber, where is the phase value of the actual signal at the jth sampling point, is the phase value of the initial signal at the jth sampling point, is the rated signal phase value, P is the number of sampling points, and S is the optical fiber length in centimeters.

[0037] Furthermore, when analyzing and judging the data, the analysis and judgment module can obtain the time data of the pulse laser emitting light pulses to the optical fiber and the time data of the photodetector receiving the backscattered light and converting it into an electrical signal from the data acquisition module, and can analyze the optical fiber position corresponding to the scattered light based on the above acquired data:

[0038]

[0039] Where c is the speed of light in a vacuum, n is the refractive index of the optical fiber material,

[0040] v is the propagation speed of light in the optical fiber, t1 is the time when the photodetector receives the backscattered light and converts it into an electrical signal, t0 is the initial time when the pulse laser emits a light pulse into the optical fiber, Δt is the time required for the light pulse to be received from the emission to the reception, and L is the optical fiber position corresponding to the scattered light, that is, the distance from the position where the acoustic wave vibration occurs to the starting point.

[0041] Furthermore, the background monitoring unit includes: a data receiving module, a terminal display module and a remote control module;

[0042] Data receiving module: used for receiving information data from the pre-processing unit and the data processing unit in real time;

[0043] Terminal display module: used to display the information data received by the data receiving module;

[0044] Remote control module: used to manually control the modules in the fiber optic acoustic vibration DAS big data processing system at the background monitoring end as needed.

[0045] The beneficial effects of the optical fiber acoustic wave vibration DAS big data processing system of the present invention are as follows: by pre-processing the signal data, the amplitude difference between different signals can be eliminated, and the specific band frequency in the signal can be filtered out, so that the signal analysis and processing can be better performed. Then, through formula algorithm analysis, the unprocessed signal data is subjected to secondary filtering and noise reduction processing, which can effectively reduce the amplitude of the noise, thereby improving the signal-to-noise ratio and effectively improving the signal quality. Further, through formula algorithm analysis, it is effective to determine whether acoustic wave vibration occurs on the optical fiber. When acoustic wave vibration occurs, the performance control module will be triggered, which can improve the power consumption of the built-in data processor of the optical fiber acoustic wave vibration DAS big data processing system to enhance its performance, and can perform calculation and processing tasks more quickly, greatly improving the data processing efficiency of the optical fiber acoustic wave vibration DAS big data processing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0047] Figure 1 This is a schematic diagram of the system principle. DETAILED DESCRIPTION

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0049] According to one aspect of the present invention, Figure 1 As shown, a fiber acoustic wave vibration DAS big data processing system is provided. First, the amplitude, phase, amplitude and time data of the signal data generated by the fiber acoustic wave vibration DAS system during operation are collected through the amplitude collection module, phase collection module, amplitude collection module and time collection module in the data collection unit. Then the collected information data is transmitted to the pre-processing unit through the 5G network transmission method, and the specific band frequency in the signal is filtered out through the filtering processing module. The amplitude difference between different signals is eliminated through the normalization module. At the same time, the information data processed by the filtering processing module and the normalization module is stored through the data storage module.

[0050] When the normalization module processes the signal amplitude, the normalized signal amplitude is:

[0051] X norm =(XX min ) / (X max -X min )

[0052] Among them, X normis the normalized signal amplitude, X is the amplitude of the original signal to be normalized, X min is the minimum amplitude in the signal, X max is the maximum amplitude in the signal. The purpose of signal normalization is to map the amplitude range of the signal to a specified range, which can be set to [0, 1] or [-1, 1]. Through signal normalization, the amplitude differences between different signals can be eliminated to better analyze and process the signal.

[0053] Afterwards, the information data is obtained from the data storage module through the data acquisition module, and the obtained data is analyzed and judged through the analysis and judgment module to obtain the processing and analysis results, and a big data processing report can be generated based on the processing and analysis results. At the same time, after an abnormal situation occurs in the analysis and judgment results, a control instruction will be issued to the intelligent control unit based on the analysis and judgment results, and the optical fiber acoustic wave vibration DAS big data processing system is automatically controlled by the intelligent control unit. Then, through the data receiving module in the background monitoring unit, the information data of the pre-processing unit and the data processing unit are received in real time, and the information data received by the data receiving module is displayed through the terminal display module. The distance of the acoustic wave vibration is intuitively displayed through the waterfall chart on the terminal display module, and the signal strength at different positions or times is intuitively understood through the original signal chart and the historical signal chart on the terminal display module. After the staff finds that the data collected by the analysis and judgment is abnormal, the remote control module can be used to manually adjust the modules in the optical fiber acoustic wave vibration DAS big data processing system.

[0054] When the analysis and judgment module analyzes and judges the data, the data acquisition module can obtain the maximum acoustic vibration amplitude reached by the disturbance signal point and the maximum acoustic vibration amplitude generated by different types of noise signals, and can analyze the signal-to-noise ratio in the data transmission process based on the above acquired data. If:

[0055]

[0056] This indicates that the signal quality during data transmission is higher. If SNR <SNR e , it means that the signal quality during data transmission is lower, and it is necessary to use intelligent noise reduction modules (such as wavelet transform, low-pass filter) to perform secondary filtering and noise reduction on the signal during data transmission, which can effectively reduce the noise amplitude and thus improve the signal-to-noise ratio. Among them, SNR is the signal-to-noise ratio, N is the number of disturbance signal points, V i is the maximum acoustic vibration amplitude reached by the ith disturbance signal point, M is the type of noise signal generated by environmental factors, system noise or interference source factors in addition to the effective disturbance signal, V kis the maximum acoustic vibration amplitude generated by the kth noise signal, SNR e is the preset rated signal-to-noise ratio threshold parameter.

[0057] When the analysis and judgment module is analyzing and judging the data, the phase value data of the signal can be obtained from the data acquisition module, and whether the acoustic wave vibration occurs on the optical fiber can be comprehensively analyzed. If:

[0058]

[0059] This means that no acoustic vibration occurs on the optical fiber. This means that acoustic vibration occurs on the optical fiber, and a large amount of information data is generated, which in turn triggers the performance control module, which can increase the power consumption of the built-in data processor of the optical fiber acoustic vibration DAS big data processing system to enhance its performance and perform computing and processing tasks more quickly. is the phase value of the actual signal at the jth sampling point, is the phase value of the initial signal at the jth sampling point, is the rated signal phase value, P is the number of sampling points, and S is the optical fiber length in centimeters.

[0060] When the analysis and judgment module analyzes and judges the data, the time when the pulse laser emits light pulses to the optical fiber and the time when the photoelectric detector receives the backscattered light and converts it into an electrical signal can be obtained from the data acquisition module, and the optical fiber position corresponding to the scattered light can be analyzed based on the above acquired data:

[0061]

[0062] Among them, c is the propagation speed of light in vacuum, n is the refractive index of the optical fiber material, v is the propagation speed of light in the optical fiber, t1 is the time when the photodetector receives the backscattered light and converts it into an electrical signal, t0 is the initial time when the pulse laser emits a light pulse to the optical fiber, Δt is the time required for the light pulse to be received from the emission to the reception, and L is the optical fiber position corresponding to the scattered light, that is, the distance from the position where the acoustic wave vibration occurs to the starting point.

[0063] The electrical components that appear in this article are all electrical components that exist in reality.

[0064] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A fiber acoustic vibration DAS big data processing system, characterized in that: include: Data collection unit, pre-processing unit, data processing unit, intelligent control unit and background monitoring unit, among which; Data acquisition unit: used to collect the amplitude, phase, amplitude and time data of the signal data generated by the optical fiber acoustic vibration DAS system during operation; Pre-processing unit: used to pre-process the information data collected by the data acquisition unit, normalize and filter the signal data, and store the pre-processed data; Data processing unit: used to process and analyze the information data stored in the data storage module, and obtain the processing and analysis results, and can generate a big data processing report based on the processing and analysis results, and at the same time, can issue control instructions to the intelligent control unit based on the processing and analysis results; Intelligent control unit: used to perform corresponding control operations on the optical fiber acoustic vibration DAS big data processing system according to the control instructions issued by the data processing unit; Background monitoring unit: used to display the data collected and received by the pre-processing unit and the data processing unit in real time, and can also remotely control the modules in the fiber optic acoustic vibration DAS big data processing system.

2. The optical fiber acoustic vibration DAS big data processing system according to claim 1, characterized in that: The data acquisition unit includes: an amplitude acquisition module, a phase acquisition module, an amplitude acquisition module and a time acquisition module; Amplitude acquisition module: used to collect information data of the signal amplitude generated during the operation of the optical fiber acoustic vibration DAS system; Phase acquisition module: used to collect information data of signal phase values ​​generated during the operation of the optical fiber acoustic wave vibration DAS system; Amplitude acquisition module: used to collect information data on the acoustic vibration amplitude generated during the operation of the optical fiber acoustic vibration DAS system; Time acquisition module: used to collect the time information data of the pulse laser emitting light pulses to the optical fiber and the time information data of the photoelectric detector receiving the backscattered light and converting it into an electrical signal during the operation of the optical fiber acoustic vibration DAS system.

3. The optical fiber acoustic vibration DAS big data processing system according to claim 2 is characterized in that: The pre-processing unit includes: a filtering processing module, a normalization module and a data storage module; Filter processing module: used to filter out specific band frequencies in the signal; Normalization module: used to eliminate the amplitude differences between different signals; Data storage module: used to store information data processed by the filtering processing module and the normalization module.

4. The optical fiber acoustic vibration DAS big data processing system according to claim 3 is characterized by: The data processing unit includes: a data acquisition module, an analysis and judgment module, an instruction issuing module and a report generating module; Data acquisition module: used to acquire the information data stored in the data storage module in real time; Analysis and judgment module: used to analyze and judge the information data obtained by the data acquisition module, so as to obtain the results of the analysis and judgment; Instruction issuing module: when an abnormal situation occurs in the analysis and judgment results, it will issue control instructions to the intelligent control unit to automatically control the optical fiber acoustic vibration DAS big data processing system according to the analysis and judgment results; Report generation module: used to generate fiber optic acoustic vibrations based on the results of analysis and judgment Processing report of DAS big data processing system.

5. The optical fiber acoustic vibration DAS big data processing system according to claim 4, characterized in that: The intelligent control unit includes: an instruction receiving module, a performance control module and an intelligent noise reduction module; Instruction receiving module: used to receive the instruction information issued by the instruction issuing module, and perform corresponding instruction control operations on the optical fiber acoustic wave vibration DAS big data processing system; Performance control module: used to improve the operating power consumption of the built-in data processor of the optical fiber acoustic vibration DAS big data processing system; Intelligent noise reduction module: used to reduce the noise of information data generated during the operation of the fiber optic acoustic vibration DAS system.

6. The optical fiber acoustic vibration DAS big data processing system according to claim 5, characterized in that: When the normalization module processes the signal amplitude, the normalized signal amplitude is: X norm =(X-X min ) / (X max -X min ) Among them, X norm is the normalized signal amplitude, X is the amplitude of the original signal to be normalized, X min is the minimum amplitude in the signal, X max is the maximum amplitude in the signal.

7. The optical fiber acoustic vibration DAS big data processing system according to claim 6, characterized in that: When analyzing and judging the data, the analysis and judgment module can obtain the data of the maximum acoustic vibration amplitude reached by the disturbance signal point and the maximum acoustic vibration amplitude generated by different types of noise signals from the data acquisition module, and can analyze the signal-to-noise ratio in the data transmission process based on the above acquired data. If: This means that the signal quality during data transmission is higher, where SNR is the signal-to-noise ratio, N is the number of disturbance signal points, and V i is the maximum acoustic vibration amplitude reached by the ith disturbance signal point, M is the type of noise signal generated by environmental factors, system noise or interference source factors in addition to the effective disturbance signal, V k is the maximum acoustic vibration amplitude generated by the kth noise signal, SNR e It is the preset rated signal-to-noise ratio threshold parameter.

8. The optical fiber acoustic vibration DAS big data processing system according to claim 7, characterized in that: When the analysis and judgment module analyzes and judges the data, it can obtain the phase value data of the signal from the data acquisition module, and can comprehensively analyze whether the acoustic wave vibration occurs on the optical fiber. If: This means that no acoustic vibration occurs on the optical fiber, where is the phase value of the actual signal at the jth sampling point, is the phase value of the initial signal at the jth sampling point, is the rated signal phase value, P is the number of sampling points, and S is the optical fiber length in centimeters.

9. The optical fiber acoustic vibration DAS big data processing system according to claim 8, characterized in that: When analyzing and judging the data, the analysis and judgment module can obtain the time when the pulse laser emits light pulses to the optical fiber and the time when the photoelectric detector receives the backscattered light and converts it into an electrical signal from the data acquisition module, and can analyze the optical fiber position corresponding to the scattered light based on the above acquired data: Among them, c is the propagation speed of light in vacuum, n is the refractive index of the optical fiber material, v is the propagation speed of light in the optical fiber, t1 is the time when the photodetector receives the backscattered light and converts it into an electrical signal, t0 is the initial time when the pulse laser emits a light pulse to the optical fiber, Δt is the time required for the light pulse to be received from the emission to the reception, and L is the optical fiber position corresponding to the scattered light, that is, the distance from the position where the acoustic wave vibration occurs to the starting point.

10. The optical fiber acoustic vibration DAS big data processing system according to claim 9, characterized in that: The background monitoring unit includes: a data receiving module, a terminal display module and a remote control module; Data receiving module: used for receiving information data from the pre-processing unit and the data processing unit in real time; Terminal display module: used to display the information data received by the data receiving module; Remote control module: used to manually control the modules in the fiber optic acoustic vibration DAS big data processing system at the background monitoring end as needed.

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