Pipeline leakage monitoring system based on FM radio module

Abstract

The invention discloses a pipeline leakage monitoring system based on an FM radio module, and the system comprises a setting module which is used for setting a plurality of hydrophones or vibration sensors on the surface of a to-be-monitored pipeline; the first acquisition module is used for acquiring a vibration signal of the surface of the to-be-monitored pipeline; the second acquisition module is used for synchronously acquiring an audio signal of an FM radio module arranged in the remote data terminal and a clock signal of a clock module; the generation module is used for generating a time stamp according to the clock signal, adding the time stamp to the sound or vibration signal and the audio signal to generate a data file and uploading the data file to the server; and the analysis module is used for analyzing the data file by using the server through a special algorithm, and judging whether the to-be-monitored pipeline leaks water or not and the specific position of a water leakage point according to an analysis result. Compared with a GNSS signal, the FM audio signal is less likely to be shielded by the well lid, and the positioning precision, the positioning efficiency and the practicability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline monitoring, and particularly to a pipeline leakage monitoring system based on an FM radio module. Background Art

[0002] In recent years in China, pipeline managers have had an increasing demand for pipeline leakage monitoring. There have also emerged various devices in the market for monitoring pipeline leakage by detecting the sound or vibration of the pipeline leakage. Such products generally consist of a hydrophone or vibration sensor, an RTU (Remote Terminal Unit), a server, and special software for leakage monitoring. This leakage positioning method requires that two or more RTUs have precisely synchronized internal clocks to obtain an accurate time difference. Currently, related products in the market generally use GNSS time synchronization technology to calibrate the internal clocks of RTUs to achieve clock synchronization between relevant RTUs. This technology has the problem that GNSS signals are easily blocked in use. Since RTUs are usually installed in pipeline maintenance wells, due to the shielding effect of the manhole cover on GNSS signals, GNSS time synchronization technology often fails to work. To address this problem, the current solution is to drill holes in the manhole cover and extend the GNSS antenna out from under the manhole cover, thus avoiding the problem of signal shielding. This method will increase the workload of drilling holes on the one hand, and on the other hand, some customers do not allow drilling holes in the manhole cover, so GNSS time synchronization technology cannot be used. Summary of the Invention

[0003] In view of the problems shown above, the present invention provides a pipeline leakage monitoring system based on an FM radio module to solve the problem that the shielding effect of the manhole cover on GNSS signals in the background art leads to inability to achieve precise clock calibration, thus unable to accurately monitor pipeline water leakage and reducing the practicality.

[0004] A pipeline leakage monitoring system based on an FM radio module, the system comprising:

[0005] A setting module, configured to set a plurality of hydrophones or vibration sensors on the surface of the pipeline to be monitored;

[0006] A first acquisition module, configured to continuously acquire sound signals on the surface of the pipeline to be monitored by using a hydrophone or continuously acquire vibration signals on the surface of the pipeline to be monitored by using a vibration sensor;

[0007] A second acquisition module, configured to simultaneously acquire the audio signal of the FM radio module and the clock signal of the clock module disposed in the remote data terminal while acquiring sound signals or vibration signals on the surface of the pipeline to be monitored;

[0008] A generation module, configured to generate a time stamp according to a clock signal, attach the time stamp to a sound or vibration signal and an audio signal to generate a data file, and upload the data file to a server;

[0009] An analysis module, configured to analyze the data file by using the server through a dedicated algorithm, and determine whether the pipeline to be monitored leaks and the specific leak point location according to the analysis result.

[0010] Preferably, the setting module includes:

[0011] A detection sub-module, configured to detect the overall length data of the pipeline to be monitored;

[0012] A first determination sub-module, configured to determine the installation interval distance of a hydrophone or a vibration sensor according to the overall length data of the pipeline to be monitored;

[0013] A setting sub-module, configured to set a corresponding number of hydrophones or vibration sensors on the surface of the pipeline to be monitored according to the installation interval distance of the hydrophone or the vibration sensor.

[0014] Preferably, the detection sub-module includes:

[0015] A first confirmation unit, configured to obtain the design drawing of the pipeline to be monitored, and confirm the structural characteristics of the pipeline to be monitored according to the design drawing;

[0016] A selection unit, configured to select a measurement method according to the structural characteristics of the pipeline to be monitored;

[0017] A first determination unit, configured to determine a plurality of measurement points on the pipeline to be monitored based on the measurement method, and select a suitable measurement instrument;

[0018] A measurement unit, configured to perform a measurement operation based on a plurality of measurement points by using the measurement instrument, obtain measurement data, and determine the overall length data of the pipeline to be monitored according to the measurement data.

[0019] Preferably, the first determination sub-module includes:

[0020] A first acquisition unit, configured to acquire the signal acquisition characteristics of a hydrophone or a vibration sensor;

[0021] A second confirmation unit, configured to determine the farthest interval distance between adjacent hydrophones or vibration sensors according to the signal acquisition characteristics, and confirm the farthest interval distance as the installation interval distance of the hydrophone or the vibration sensor.

[0022] Preferably, the first acquisition module includes:

[0023] A setting sub-module, configured to set continuous acquisition period parameters and signal acquisition parameters of a hydrophone or a vibration sensor;

[0024] An adjustment sub-module for performing signal acquisition tests on hydrophones or vibration sensors, and adjusting the positions and sensitivity parameters of the hydrophones or vibration sensors according to the test results;

[0025] A first acquisition sub-module for continuously acquiring sound signals on the surface of the pipeline to be monitored by using the adjusted hydrophone or continuously acquiring vibration signals on the surface of the pipeline to be monitored by using the adjusted vibration sensor.

[0026] Preferably, the second acquisition module includes:

[0027] An acquisition sub-module for acquiring the clock deviation between remote data terminals;

[0028] A processing sub-module for performing clock synchronization processing between remote data terminals by using the clock deviation between remote data terminals;

[0029] A second acquisition sub-module for synchronously acquiring the audio signal of the FM radio module and the clock signal of the clock module arranged in the processed remote data terminal while acquiring sound signals or vibration signals on the surface of the pipeline to be monitored.

[0030] Preferably, the generation module includes:

[0031] A selection sub-module for selecting an adapted timestamp generation algorithm according to the signal type of the clock signal;

[0032] A first generation sub-module for generating a time stamp from the clock signal by using the timestamp generation algorithm;

[0033] An extraction sub-module for extracting the time code segments of the sound or vibration signal and the audio signal, adding the time stamp to the time code segments of the sound or vibration signal and the audio signal, and generating a data file;

[0034] An upload sub-module for uploading the data file to the server through a data upload channel.

[0035] Preferably, the analysis module includes:

[0036] A first analysis module for installing and running special software for leakage monitoring on the server, and analyzing the sound or vibration signal and the audio signal in the data file by using the special algorithm of the leakage monitoring special software to determine whether the signal is abnormal. If so, it is determined that there is a leakage in the pipeline to be monitored. If not, it is determined that there is no leakage in the pipeline to be monitored;

[0037] A first calculation sub-module for calculating the time stamp deviation between remote data terminals, and determining the time difference between the sound or vibration signals between remote data terminals according to the time stamp deviation;

[0038] A second calculation sub-module, configured to calculate a distance difference between a water leakage point and a remote data terminal according to a product of a time difference between sound or vibration signals between remote data terminals and a propagation speed of the sound or vibration signals inside a pipeline;

[0039] A second determination sub-module, configured to determine a water leakage point position according to the distance difference between the water leakage point and the remote data terminal and an installation position of the remote data terminal.

[0040] Preferably, the obtaining sub-module, configured to obtain a clock deviation between remote data terminals, includes:

[0041] A second obtaining unit, configured to obtain the same FM audio from a broadcast transmitting tower;

[0042] A third obtaining unit, configured to use internal clocks of the remote data terminals as time references respectively, and obtain a first time point when the same FM audio arrives at a first remote data terminal and a second time point when the same FM audio arrives at a second remote data terminal;

[0043] A calculation unit, configured to calculate a difference between the first time point and the second time point, and use the difference as the clock deviation between the remote data terminals.

[0044] Preferably, before the setting module sets a plurality of hydrophones or vibration sensors on a surface of a pipeline to be monitored, the system is further configured to:

[0045] Detect environmental factors of a target environment where the pipeline to be monitored is located;

[0046] Determine interference factors in the target environment according to the environmental factors, and determine an interference ratio of each interference factor for the hydrophone or the vibration sensor;

[0047] Select a sensor with a relatively small interference ratio as an installation sensor for the pipeline to be monitored.

[0048] Other features and advantages of the present invention will be described in the following specification, and part of them will be obvious from the specification, or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specification and the drawings.

[0049] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0050] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0051] Figure 1Schematic diagram of a pipeline leakage monitoring system provided by the present invention based on an FM radio module;

[0052] Figure 2 Schematic diagram of the first acquisition module in a pipeline leakage monitoring system provided by the present invention based on an FM radio module;

[0053] Figure 3 Schematic diagram of the second acquisition module in a pipeline leakage monitoring system provided by the present invention based on an FM radio module;

[0054] Figure 4 Screenshot of an embodiment of the specific layout of a pipeline leakage monitoring system provided by the present invention based on an FM radio module;

[0055] Figure 5 Screenshot of an embodiment of synchronizing the clock signal in a pipeline leakage monitoring system provided by the present invention based on an FM radio module. Detailed implementation manners

[0056] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0057] In recent years in China, pipeline managers have had an increasing demand for pipeline leakage monitoring. There have also emerged various devices in the market for monitoring pipeline leakage by detecting the sound or vibration of pipeline leakage. Such products usually consist of hydrophones or vibration sensors, RTUs (Remote Terminal Units), servers, and dedicated leakage monitoring software. This leakage positioning method requires the internal clocks of two or more RTUs to be precisely synchronized to obtain an accurate time difference. Currently, related products in the market generally use GNSS timing technology to calibrate the internal clocks of RTUs to achieve clock synchronization between relevant RTUs. This technology has the problem that GNSS signals are easily blocked in use. Since RTUs are usually installed in pipeline maintenance wells, due to the shielding effect of the well covers on GNSS signals, GNSS timing technology often cannot work. To address this problem, the current solution is to drill holes in the well covers and extend the GNSS antennas from under the well covers, thus avoiding the problem of signal shielding. This method will increase the workload of drilling holes on the one hand, and on the other hand, some customers do not allow drilling holes on the well covers, so GNSS timing technology cannot be used. To solve the above problems, this embodiment discloses a pipeline leakage monitoring system based on an FM radio module.

[0058] A pipeline leakage monitoring system based on an FM radio module, as Figure 1 shown, the system includes:

[0059] A setting module 101, configured to set a plurality of hydrophones or vibration sensors on the surface of the pipeline to be monitored;

[0060] A first acquisition module 102, configured to continuously acquire the sound signals on the surface of the pipeline to be monitored by using a hydrophone or continuously acquire the vibration signals on the surface of the pipeline to be monitored by using a vibration sensor;

[0061] A second acquisition module 103, configured to synchronously acquire the audio signal of the FM radio module and the clock signal of the clock module arranged in the remote data terminal while acquiring the sound signal or vibration signal on the surface of the pipeline to be monitored;

[0062] A generation module 104, configured to generate a time stamp according to the clock signal, attach the time stamp to the sound or vibration signal and the audio signal to generate a data file, and upload it to the server;

[0063] An analysis module, configured to use the server to analyze the data file through a dedicated algorithm, and judge whether the pipeline to be monitored leaks and the specific leakage point location according to the analysis result.

[0064] The working principle of the above technical solution is as follows: First, set a plurality of hydrophones or vibration sensors on the surface of the pipeline to be monitored through the setting module; Secondly, use the first acquisition module to continuously acquire the sound signals on the surface of the pipeline to be monitored by using a hydrophone or continuously acquire the vibration signals on the surface of the pipeline to be monitored by using a vibration sensor; Then, based on the second acquisition module, synchronously acquire the audio signal of the FM radio module and the clock signal of the clock module arranged in the remote data terminal while acquiring the sound signal or vibration signal on the surface of the pipeline to be monitored; Then, use the generation module to generate a time stamp according to the clock signal, attach the time stamp to the sound or vibration signal and the audio signal to generate a data file, and upload it to the server; Finally, use the analysis module to use the server to analyze the data file through a dedicated algorithm, and judge whether the pipeline to be monitored leaks and the specific leakage point location according to the analysis result.

[0065] The beneficial effects of the above technical solution are as follows: In response to the problem that GNSS signals are vulnerable to being blocked by manhole covers, resulting in abnormal timing, FM audio signals are used to synchronize the clocks of multiple remote data terminals instead of GNSS. Compared with GNSS signals, FM audio signals are less likely to be blocked by manhole covers, thus ensuring the clock synchronization between remote data terminals and then accurately determining whether the pipeline to be monitored is leaking and the specific leakage location based on the signal analysis results of sound signals or vibration signals, improving the positioning accuracy, positioning efficiency and practicality, solving the problem in the prior art that the blocking effect of manhole covers on GNSS signals leads to the inability to achieve accurate clock calibration, thus unable to accurately monitor pipeline leakage and reducing the practicality.

[0066] In one embodiment, the setting module includes:

[0067] A detection sub-module, configured to detect the overall length data of the pipeline to be monitored;

[0068] A first determination sub-module, configured to determine the installation interval distance of hydrophones or vibration sensors according to the overall length data of the pipeline to be monitored;

[0069] A setting sub-module, configured to set a corresponding number of hydrophones or vibration sensors on the surface of the pipeline to be monitored according to the installation interval distance of the hydrophones or vibration sensors.

[0070] The beneficial effects of the above technical solution are as follows: By reasonably determining the installation interval distance of the sensors according to the overall length data of the pipeline to be monitored, the signal stable acquisition work for the entire pipeline to be monitored can be maximally ensured, further improving the practicality, stability and reliability.

[0071] In one embodiment, the detection sub-module includes:

[0072] A first confirmation unit, configured to obtain the design drawing of the pipeline to be monitored and confirm the structural characteristics of the pipeline to be monitored according to the design drawing;

[0073] A selection unit, configured to select a measurement method according to the structural characteristics of the pipeline to be monitored;

[0074] A first determination unit, configured to determine multiple measurement points on the pipeline to be monitored based on the measurement method and select an appropriate measurement instrument;

[0075] A measurement unit, configured to perform measurement operations based on multiple measurement points using the measurement instrument, obtain measurement data, and determine the overall length data of the pipeline to be monitored according to the measurement data.

[0076] In this embodiment, the structural characteristics are represented as the layout structural characteristics of the pipeline to be monitored;

[0077] In this embodiment, the measurement methods can include electromagnetic measurement, optical measurement, etc.

[0078] The beneficial effects of the above technical solution are as follows: By selecting a reasonable measurement method according to the structural characteristics of the pipeline to be monitored, the measurement efficiency and the high quality of measurement data can be ensured, further improving the practicability and data reliability. Further, by setting multiple measurement points, the accuracy and reliability of the measurement data can be ensured, further guaranteeing the data reliability.

[0079] In one embodiment, the first determination sub-module includes:

[0080] A first acquisition unit, configured to acquire the signal acquisition characteristics of a hydrophone or a vibration sensor;

[0081] A second confirmation unit, configured to determine the farthest interval distance between adjacent hydrophones or vibration sensors according to the signal acquisition characteristics, and confirm the farthest interval distance as the installation interval distance of the hydrophone or the vibration sensor.

[0082] In this embodiment, the signal acquisition characteristics are represented as the signal feedback characteristics and reception characteristics of the hydrophone or the vibration sensor during signal acquisition.

[0083] The beneficial effects of the above technical solution are as follows: By determining the interval setting distance of the sensors according to the signal acquisition characteristics of the hydrophone or the vibration sensor, the stable signal acquisition work of the sensors can be ensured, and the cost can be saved to a certain extent, further improving the practicability.

[0084] In one embodiment, as Figure 2 shown, the first acquisition module 102 includes:

[0085] A setting sub-module 1021, configured to set the continuous acquisition period parameters and the signal acquisition parameters of the hydrophone or the vibration sensor;

[0086] An adjustment sub-module 1022, configured to perform signal acquisition tests on the hydrophone or the vibration sensor, and adjust the position and sensitivity parameters of the hydrophone or the vibration sensor according to the test results;

[0087] A first acquisition sub-module 1023, configured to continuously acquire the sound signals on the surface of the pipeline to be monitored by using the adjusted hydrophone or continuously acquire the vibration signals on the surface of the pipeline to be monitored by using the adjusted vibration sensor.

[0088] In this embodiment, the signal acquisition parameters are represented as parameters such as the frequency and amplitude of the acquired signals;

[0089] In this embodiment, the sensitivity parameter is represented as the unfixed and rotatable sensitivity of the hydrophone or the vibration sensor.

[0090] The beneficial effects of the above technical solution are as follows: By intelligently adjusting the position and sensitivity parameters of the hydrophone or vibration sensor, the stability of signal acquisition and the signal quality can be further ensured, and the practicability and reliability are further improved.

[0091] In one embodiment, as Figure 3 shown, the second acquisition module 103 includes:

[0092] An acquisition sub-module 1031, configured to acquire the clock deviation between remote data terminals;

[0093] A processing sub-module 1032, configured to perform clock synchronization processing between remote data terminals by using the clock deviation between remote data terminals;

[0094] A second acquisition sub-module 1033, configured to synchronously acquire the audio signal of the FM radio module and the clock signal of the clock module disposed in the processed remote data terminal while acquiring the sound signal or vibration signal on the surface of the pipeline to be monitored.

[0095] The beneficial effects of the above technical solution are as follows: By performing clock synchronization processing between remote data terminals by using the clock deviation, the strict requirements for clock synchronization can be maximally ensured, laying a foundation for subsequent signal analysis and pipeline leakage determination, and further improving the practicability and stability.

[0096] In one embodiment, the generation module includes:

[0097] A selection sub-module, configured to select an adapted time stamp generation algorithm according to the signal type of the clock signal;

[0098] A first generation sub-module, configured to generate a time mark from the clock signal by using the time stamp generation algorithm;

[0099] An extraction sub-module, configured to extract the time code segments of the sound or vibration signal and the audio signal, and add the time mark to the time code segments of the sound or vibration signal and the audio signal to generate a data file;

[0100] An upload sub-module, configured to upload the data file to the server through a data upload channel.

[0101] The beneficial effects of the above technical solution are as follows: By selecting an adapted time stamp generation algorithm, the stability and real-time performance of time mark generation can be ensured, improving the work efficiency. Further, by adding the time mark to the time code segments of the sound or vibration signal and the audio signal to generate a data file, the time mark can be perfectly bound to the sound or vibration signal and the audio signal, laying a condition for subsequent clock signal analysis, and further improving the practicability and reliability.

[0102] In one embodiment, the analysis module includes:

[0103] A first analysis module, configured to install and run special software for leakage monitoring on a server, and use the special software for leakage monitoring to analyze sound or vibration signals and audio signals in a data file through a special algorithm to determine whether the signals are abnormal. If so, it is determined that there is a leakage in the pipeline to be monitored; if not, it is determined that there is no leakage in the pipeline to be monitored;

[0104] A first calculation sub-module, configured to calculate the time stamp deviation between remote data terminals, and determine the time difference between sound or vibration signals between remote data terminals according to the time stamp deviation;

[0105] A second calculation sub-module, configured to calculate the distance difference between the leakage point and the remote data terminal according to the product of the time difference between sound or vibration signals between remote data terminals and the propagation speed of the sound or vibration signals inside the pipeline;

[0106] A second determination sub-module, configured to determine the leakage point location according to the distance difference between the leakage point and the remote data terminal and the installation location of the remote data terminal.

[0107] The beneficial effects of the above technical solution are: The distance difference between the leakage point and the remote data terminal can be accurately calculated according to the signal propagation characteristics and the time difference, which can maximize the positioning accuracy.

[0108] In one embodiment, the acquisition sub-module, configured to acquire the clock deviation between remote data terminals, includes:

[0109] A second acquisition unit, configured to acquire the same FM audio from a broadcast tower;

[0110] A third acquisition unit, configured to use the internal clocks of the remote data terminals as time bases respectively, and acquire the first time point when the same FM audio arrives at the first remote data terminal and the second time point when it arrives at the second remote data terminal;

[0111] A calculation unit, configured to calculate the difference between the first time point and the second time point, and use the difference as the clock deviation between the remote data terminals.

[0112] The beneficial effects of the above technical solution are: By retrieving the same FM audio for testing, the objectivity of the test results can be ensured. Further, by calculating the difference between time points to determine the clock deviation, the signal acquisition clock deviation can be intuitively determined according to the preset signal acquisition characteristics of the remote data terminals, improving the practicality.

[0113] In one embodiment, before the setting module sets a plurality of hydrophones or vibration sensors on the surface of the pipeline to be monitored, the system is further configured to:

[0114] Detect the environmental factors of the target environment where the pipeline to be monitored is located;

[0115] Determine the interference factors in the target environment according to the environmental factors, and determine the respective interference ratios of the interference factors for the hydrophones or vibration sensors;

[0116] Select the sensor with a relatively small interference ratio as the installation sensor for the pipeline to be monitored.

[0117] The beneficial effects of the above technical solution are as follows: By selecting a suitable sensor according to the environmental interference factors, the interference brought by the pipeline environment can be maximally overcome, so as to ensure the accuracy of leak determination and positioning for the pipeline to be monitored, and further improve the practicability and stability.

[0118] In one embodiment, as Figure 4 shown, in view of the problem that GNSS signals are vulnerable to being blocked by manhole covers and cannot be normally timed, the present invention uses FM broadcast audio to synchronize the clocks of multiple RTUs instead of GNSS. Compared with GNSS signals, FM signals are less likely to be blocked by manhole covers. In Figure 4 Figure, 1 and 3 are two hydrophones or vibration sensors installed at different positions on the surface of the pipeline: 2 and 4 are RTUs: 2 includes 2a and 2b, and 4 includes 4a and 4b. Among them, a is a clock module, b is an FM radio module: 5 is a server: 5 includes 5a, and 5a is a dedicated software for leak monitoring running on the server. 1 is connected to 2, and 3 is connected to 4. The connection methods include analog electrical connection, wired digital communication connection or wireless digital communication connection. 2 and 4 are respectively connected to 5. The connection methods include wired Ethernet, fiber optic Ethernet, 4G, 5G, NB-IoT network connection or other digital communication network connections.

[0119] The hydrophones or vibration sensors (1 and 3) are installed at different positions on the surface of the pipeline to be monitored at a certain distance, and continuously or regularly collect the sound or vibration signals of the pipeline. The FM radio modules (2a and 4a) are installed in the RTUs (2 and 4), and regularly collect FM broadcast audio signals. The RTUs (2 and 4) regularly or continuously collect the sound or vibration signals of the hydrophones or vibration sensors (1 and 3), and the audio signals of the FM radio modules (2a and 4a), and at the same time read the date and time of the real-time clock modules (2b and 4b) as time stamps, and finally send the sound or vibration signals and FM audio signals with time stamps to the server.

[0120] A dedicated leakage monitoring software (5a) is installed and run on the server (5). The software (5a) analyzes the pipeline sound or vibration signal through a dedicated algorithm. First, it determines whether pipeline leakage has occurred. If pipeline leakage has occurred, it calculates the location of the leakage point through a leakage location algorithm and notifies the user of the leakage information and the location of the leakage point. The leakage location uses the sound source location method. The sound or vibration data file uploaded by the RTU contains a time stamp, which represents the time when the RTU collects the signal. Assuming that a leak occurs at a certain point in the pipeline between the hydrophone or vibration sensors (1 and 3), by calculating the difference between the time stamps in the sound or vibration data files of the two RTUs, the time difference between the two RTUs receiving the sound or vibration signal can be calculated. By multiplying the time difference by the propagation speed of the sound or vibration signal inside the pipeline, the distance difference can be calculated, and thus the location of the leakage point on the pipeline can be obtained.

[0121] The present invention realizes the clocks with precise synchronization of two or more RTUs through an FM radio module and a clock compensation algorithm, so as to mark an accurate time stamp on the data file uploaded to the server. As Figure 5 shown: 6 is the FM broadcast tower, T3 and T4 are the same segment of FM audio. According to the internal clocks of the two RTUs respectively as the time reference, the time stamps reaching the two different radio modules, Te is the clock deviation between the two RTUs. Since the propagation speed of electromagnetic waves is very high, we consider that the time for the same segment of audio to reach 2 and 4 is the same. Therefore, the clock deviation Te between the two RTUs = T3 - T4. Using this deviation, the clocks of the two RTUs (2 and 4) can be synchronized. Subtracting Te from the internal clock of 2 eliminates the clock deviation between 2 and 4 and realizes clock synchronization.

[0122] Those skilled in the art should understand that the first and second in the present invention refer to different application stages only.

[0123] After considering the specification and practicing the disclosure herein, those skilled in the art will readily think of other embodiments of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0124] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A pipeline leakage monitoring system based on an FM radio module, characterized in that, the system comprises: a setting module, configured to set a plurality of hydrophones or vibration sensors on the surface of the pipeline to be monitored; a first acquisition module, configured to continuously acquire sound signals on the surface of the pipeline to be monitored by using the hydrophones or continuously acquire vibration signals on the surface of the pipeline to be monitored by using the vibration sensors; a second acquisition module, configured to synchronously acquire the audio signal of the FM radio module and the clock signal of the clock module arranged in the remote data terminal while acquiring the sound signal or vibration signal on the surface of the pipeline to be monitored; a generation module, configured to generate a time stamp according to the clock signal, attach the time stamp to the sound or vibration signal and the audio signal to generate a data file, and upload it to the server; an analysis module, configured to analyze the data file by using the server through a dedicated algorithm, and judge whether the pipeline to be monitored leaks and the specific leakage point location according to the analysis result.

2. The pipeline leakage monitoring system based on the FM radio module according to claim 1, characterized in that, the setting module comprises: a detection sub-module, configured to detect the overall length data of the pipeline to be monitored; a first determination sub-module, configured to determine the installation interval distance of the hydrophones or vibration sensors according to the overall length data of the pipeline to be monitored; a setting sub-module, configured to set a corresponding number of hydrophones or vibration sensors on the surface of the pipeline to be monitored according to the installation interval distance of the hydrophones or vibration sensors.

3. The pipeline leakage monitoring system based on the FM radio module according to claim 2, characterized in that, the detection sub-module comprises: a first confirmation unit, configured to obtain the design drawing of the pipeline to be monitored and confirm the structural characteristics of the pipeline to be monitored according to the design drawing; a selection unit, configured to select a measurement method according to the structural characteristics of the pipeline to be monitored; a first determination unit, configured to determine a plurality of measurement points on the pipeline to be monitored based on the measurement method and select an adapted measurement instrument; a measurement unit, configured to perform a measurement operation based on the plurality of measurement points by using the measurement instrument, obtain measurement data, and determine the overall length data of the pipeline to be monitored according to the measurement data.

4. The pipeline leakage monitoring system based on the FM radio module according to claim 2, characterized in that, the first determination sub-module comprises: a first acquisition unit, configured to acquire the signal acquisition characteristics of the hydrophones or vibration sensors; a second confirmation unit, configured to determine the farthest interval distance between adjacent hydrophones or vibration sensors according to the signal acquisition characteristics, and confirm the farthest interval distance as the installation interval distance of the hydrophones or vibration sensors.

5. The pipeline leakage monitoring system based on the FM radio module according to claim 1, characterized in that, the first acquisition module comprises: a setting sub-module, configured to set continuous acquisition period parameters and signal acquisition parameters of the hydrophones or vibration sensors; an adjustment sub-module, configured to perform signal acquisition tests on the hydrophones or vibration sensors, and adjust the positions and sensitivity parameters of the hydrophones or vibration sensors according to the test results. The first acquisition sub-module is used to continuously acquire the sound signals on the surface of the pipeline to be monitored by using the adjusted hydrophone or continuously acquire the vibration signals on the surface of the pipeline to be monitored by using the adjusted vibration sensor.

6. The pipeline leakage monitoring system based on the FM radio module according to claim 1, wherein, the second acquisition module includes: an acquisition sub-module, configured to acquire the clock deviation between remote data terminals; a processing sub-module, configured to perform clock synchronization processing between remote data terminals by using the clock deviation between remote data terminals; a second acquisition sub-module, configured to synchronously acquire the audio signal of the FM radio module and the clock signal of the clock module disposed in the processed remote data terminal while acquiring the sound signal or vibration signal on the surface of the pipeline to be monitored.

7. The pipeline leakage monitoring system based on the FM radio module according to claim 1, wherein, the generation module includes: a selection sub-module, configured to select an adapted time stamp generation algorithm according to the signal type of the clock signal; a first generation sub-module, configured to generate a time mark from the clock signal by using the time stamp generation algorithm; an extraction sub-module, configured to extract the time code segments of the sound or vibration signal and the audio signal, and add the time mark to the time code segments of the sound or vibration signal and the audio signal to generate a data file; an upload sub-module, configured to upload the data file to a server through a data upload channel.

8. The pipeline leakage monitoring system based on the FM radio module according to claim 1, wherein, the analysis module includes: a first analysis module, configured to install and run special software for leakage monitoring on the server, and analyze the sound or vibration signal and the audio signal in the data file by using the special algorithm of the special software for leakage monitoring to determine whether the signal is abnormal. If so, it is determined that there is a leakage in the pipeline to be monitored. If not, it is determined that there is no leakage in the pipeline to be monitored; a first calculation sub-module, configured to calculate the time mark deviation between remote data terminals, and determine the time difference between the sound or vibration signals between remote data terminals according to the time mark deviation; a second calculation sub-module, configured to calculate the distance difference between the leakage point and the remote data terminal according to the product of the time difference between the sound or vibration signals between remote data terminals and the propagation speed of the sound or vibration signal in the pipeline; a second determination sub-module, configured to determine the leakage point location according to the distance difference between the leakage point and the remote data terminal and the installation location of the remote data terminal.

9. The pipeline leakage monitoring system based on the FM radio module according to claim 6, wherein, the acquisition sub-module for acquiring the clock deviation between remote data terminals includes: a second acquisition unit, configured to acquire the same FM audio from a broadcast transmitting tower; a third acquisition unit, configured to use the respective internal clocks of the remote data terminals as time references, and acquire the first time point when the same FM audio reaches the first remote data terminal and the second time point when it reaches the second remote data terminal; A calculation unit is configured to calculate the difference between a first time point and a second time point, and use the difference as the clock deviation between remote data terminals.

10. The pipeline leakage monitoring system based on an FM radio module according to claim 1, wherein, before the setting module sets a plurality of hydrophones or vibration sensors on the surface of the pipeline to be monitored, the system is further configured to: detect environmental factors of a target environment where the pipeline to be monitored is located; determine interference factors in the target environment according to the environmental factors, and determine the interference ratio of each interference factor to the hydrophone or the vibration sensor; select a sensor with a relatively small interference ratio as the installation sensor for the pipeline to be monitored.

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