Online pipeline leak acoustic detection device

Abstract

This application relates to an online acoustic detection device and method for pipeline leaks. Through the magnetic adsorption component at the bottom of its housing, it achieves convenient deployment on metal pipelines. At the same time, its main control board actively controls the power supply of the wireless communication module and the positioning and timing module during non-working periods according to a preset strategy, which reduces the standby power consumption of the device and extends the battery life, thereby meeting the needs of large-scale, unattended long-term online monitoring.

Description

Technical Field

[0001] This application relates to the field of urban water supply pipeline detection technology, and in particular to an online pipeline leakage acoustic detection device and method. Background Technology

[0002] With the acceleration of urbanization, urban water supply networks are becoming increasingly complex, posing numerous challenges to their safe operation and maintenance. Among these challenges, leakage in water supply networks has become a significant factor restricting the efficient use of water resources. According to relevant statistics, the average leakage rate of urban water supply networks in my country remains high, exceeding 30% in some areas, leading to substantial water waste and severely impacting the stable operation of water supply systems and the effective utilization of water resources.

[0003] Currently, leak detection in my country's urban water supply networks primarily relies on traditional manual inspections and listening methods. While these methods can detect large, obvious leaks, such as burst pipes or open leaks, manual inspections are inefficient and have limited coverage. They can only perform point-based, instantaneous detection, making it difficult to achieve comprehensive coverage and real-time monitoring of large-scale, complex pipe networks, especially for minor leaks where the success rate is extremely low. Furthermore, traditional methods typically involve periodic inspections, failing to provide real-time leak detection and early warning. The lack of precise location and timing information also hinders the rapid pinpointing of leak locations for subsequent data analysis and emergency repairs. Utility Model Content

[0004] To address the aforementioned issues, this application provides an online acoustic detection device and method for pipeline leaks that enables convenient deployment and meets the low-power consumption requirements for long-term online monitoring.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application provide an online pipeline leak acoustic detection device, including a housing, a top cover, a bottom cover, and a power module. The top cover and bottom cover are respectively sealed and fixed to the top and bottom of the housing to define an accommodating space. The power module is fixed to the bottom cover and housed within the accommodating space. The top cover is provided with a main control board and an antenna electrically connected to the main control board. The main control board is housed within the accommodating space and electrically connected to the power module. The main control board is electrically connected to an acoustic sensor, a wireless communication module, and a positioning and timing module. The acoustic sensor is housed within the accommodating space and is used to collect acoustic signals from the pipeline. The wireless communication module is disposed on the top cover and housed within the accommodating space. A magnetic adsorption assembly is provided on the outer bottom of the housing to detachably adsorb and fix the device to an external metal component. The main control board is configured to actively control the power supply of the wireless communication module and the positioning and timing module according to a preset working strategy, so as to disconnect the power supply of the wireless communication module and the positioning and timing module during non-working periods.

[0006] Preferably, both the top cover and the bottom cover are at least partially fitted inside the housing; wherein, double protective rubber rings for sealing are provided between the top cover and the housing, and between the bottom cover and the housing.

[0007] Preferably, the double protective rubber ring includes: a first protective rubber ring facing the inner side of the receiving space, which is made of hydrogenated nitrile rubber; and a second protective rubber ring facing the outer side of the receiving space, which is made of EPDM rubber.

[0008] Preferably, the main control board also integrates a signal acquisition circuit, which is electrically connected to the acoustic sensor and includes an amplifier circuit, a bandpass filter, and an audio codec connected in sequence.

[0009] Preferably, the passband frequency range of the bandpass filter is from 1 Hz to 3000 Hz.

[0010] Preferably, the magnetic adsorption assembly includes a powerful magnet and a rubber gasket disposed between the contact surface of the powerful magnet and the external metal component.

[0011] Preferably, the acoustic sensor is a piezoelectric ceramic sensor.

[0012] Preferably, the wireless communication module is a 4G communication module, the positioning and timing module is a BeiDou positioning and timing module; the antenna includes a 4G antenna connected to the 4G communication module, a BeiDou antenna connected to the BeiDou positioning and timing module, and a WiFi antenna electrically connected to the main control board.

[0013] Preferably, an anti-theft ring is fixed to the outer top of the top cover.

[0014] Secondly, this application provides an online pipeline leakage acoustic detection method, applied to the online pipeline leakage acoustic detection device described in any embodiment of the first aspect, the method comprising the following steps: a) The device is attached to the pipe surface by the magnetic adsorption component; and during non-working periods, the main control board actively disconnects the power supply path connected to the wireless communication module and the positioning and timing module, so that the device enters a low-power standby state. b) According to the preset time strategy, wake up the main control board, and the main control board controls the acoustic sensor to collect acoustic signal data of the pipeline; c) The main control board temporarily connects the power supply of the positioning and timing module to obtain the current location information and time information, and binds the information with the acoustic signal data to form target data; d) The main control board temporarily connects the power supply to the wireless communication module and sends the target data to the preset server through the antenna; e) After the target data is sent, the main control board actively disconnects the power supply path connected to the wireless communication module and the positioning and timing module again, so that the device returns to the low-power standby state described in step a).

[0015] The online pipeline leakage acoustic detection device and method designed in this application achieve convenient deployment on metal pipelines through the magnetic adsorption component at the bottom of its housing; at the same time, its main control board actively controls the power supply of the wireless communication module and the positioning and timing module during non-working periods according to a preset strategy, reducing the standby power consumption of the device and extending the battery life, thereby meeting the needs of large-scale, unattended long-term online monitoring. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the online pipeline leakage acoustic detection device provided in the embodiments of this application.

[0017] Figure 2 This is a schematic diagram of the planar structure of the online pipeline leakage acoustic detection device provided in the embodiments of this application.

[0018] Figure 3 This is a circuit diagram of an acoustic sensor signal acquisition circuit provided in an embodiment of this application.

[0019] Figure 4 This is a circuit diagram of a wireless communication module provided in an embodiment of this application.

[0020] Figure 5This is a circuit diagram of the positioning and timing module provided in the embodiments of this application.

[0021] Figure 6 This is a circuit diagram of the main control board provided in an embodiment of this application.

[0022] Figure 7 This is a structural block diagram of the main control board provided in the embodiments of this application.

[0023] The components include: housing 10, top cover 20, anti-theft ring 21, bottom cover 30, power module 40, main control board 50, acoustic sensor 51, wireless communication module 52, positioning and timing module 53, signal acquisition circuit 54, antenna 60, 4G antenna 61, Beidou antenna 62, WiFi antenna 63, magnetic adsorption component 70, strong magnet 71, rubber gasket 72, double protective rubber ring 80, first protective rubber ring 81, and second protective rubber ring 82. Detailed Implementation

[0024] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0025] Firstly, embodiments of this application provide an online acoustic detection device for pipeline leaks, which has a compact structure and high integration. For example... Figure 1 , Figure 2 As shown, the device mainly includes a hollow housing 10, a top cover 20 that is sealed and fixed to the top of the housing 10, a bottom cover 30 that is sealed and fixed to the bottom of the housing 10, and a power module 40 that supplies power to the entire device.

[0026] Specifically, the top cover 20 and the bottom cover 30 respectively cooperate with both ends of the housing 10 to jointly define a sealed receiving space for protecting the internal electronic components from external environmental damage. In this embodiment, the power module 40, such as a high-capacity lithium battery pack, is stably fixed to the inside of the bottom cover 30 and housed within the receiving space.

[0027] In addition, such as Figure 2 As shown, the top cover 20 is equipped with a main control board 50 (MCU) and an antenna 60 electrically connected to the main control board 50. The main control board 50 is located inside the top cover 20, also housed within a receiving space, and is electrically connected to a power module 40 via wires to obtain operating power. Figure 7As shown, the main control board 50 integrates or is electrically connected to all functional modules of the device, including an acoustic sensor 51, a wireless communication module 52, and a positioning and timing module 53. Simultaneously, an antenna 60 is also mounted on the top cover 20 and electrically connected to the corresponding module on the main control board 50 to ensure reliable signal transmission and reception. The acoustic sensor 51 is housed within the receiving space and is used to collect acoustic signals from the pipe; the wireless communication module 52 is mounted on the top cover 20 and housed within the receiving space.

[0028] In this embodiment, in order to accurately collect leakage signals, such as Figure 3 As shown, the main control board 50 also integrates a signal acquisition circuit 54. This signal acquisition circuit 54 is electrically connected to the acoustic sensor 51 and includes, in sequence, an amplifier circuit, a bandpass filter, and an audio codec. The acoustic sensor 51 is preferably a highly sensitive piezoelectric ceramic sensor that picks up weak vibrations of the pipe wall and converts them into electrical signals. The amplifier circuit amplifies these weak signals. The bandpass filter filters out noise interference unrelated to the leak, and its passband frequency range is preferably set to 1Hz to 3000Hz, which is the main energy concentration frequency band of the acoustic signal from a pipe leak. Finally, the audio codec converts the analog signal into a digital signal for processing by the main control board 50.

[0029] like Figure 2 As shown, a magnetic adsorption assembly 70 is provided on the outer bottom of the housing 10. The magnetic adsorption assembly 70 is used to detachably adsorb and fix the device to an external metal part. The magnetic adsorption assembly 70 can generate magnetic force, so that the entire device can be conveniently, quickly and without damage adsorbed and fixed to an external metal part, which is especially suitable for cast iron or steel pipes in urban water supply systems.

[0030] The main control board 50 is configured to actively control the power supply to the wireless communication module 52 and the positioning and timing module 53 according to a preset working strategy, so as to power off the wireless communication module 52 and the positioning and timing module 53 during non-working periods. Specifically, according to a preset working cycle, such as once per hour or once per day, the main control board 50 actively disconnects the power supply to the wireless communication module 52 and the positioning and timing module 53 during most non-working periods, i.e., in standby mode, so that these two high-power modules are completely powered off, and are only briefly powered on when data collection and reporting are required. This active power management method effectively reduces the static power consumption of the device and extends the service life of the power module 40.

[0031] In some embodiments, both the top cover 20 and the bottom cover 30 are at least partially fitted into the housing 10 and locked in place by radially arranged screws; wherein, at the joint between the top cover 20 and the housing 10, and at the joint between the bottom cover 30 and the housing 10, double protective rubber rings 80 are provided for sealing. This double-layer sealing structure provides redundant protection and ensures excellent waterproof and dustproof performance.

[0032] Specifically, such as Figure 2 As shown, the double protective rubber rings 80 include: a first protective rubber ring 81 facing the inner side of the receiving space, made of hydrogenated nitrile butadiene rubber (HNBR), which has oil resistance, temperature resistance, chemical corrosion resistance, and good compression set properties; and a second protective rubber ring 82 facing the outer side of the receiving space, made of ethylene propylene diene monomer (EPDM), which has weather resistance, water resistance, chemical corrosion resistance, and good elasticity and flexibility. In this embodiment, the distance between the first protective rubber ring 81 and the second protective rubber ring 82 is greater than 1.5 mm. The combination of the two allows the device to easily cope with the complex and harsh environment inside the pipeline well, such as moisture and potential oil contamination.

[0033] In some embodiments, such as Figure 2 As shown, the magnetic adsorption assembly 70 includes a powerful magnet 71 (such as a samarium cobalt magnet) and a rubber gasket 72 disposed between the contact surface of the powerful magnet 71 and the external metal component. The rubber gasket 72 serves two purposes: firstly, it prevents scratching the pipe surface; secondly, it provides cushioning and enhances acoustic coupling.

[0034] In some embodiments, such as Figure 4 As shown, the wireless communication module 52 is a 4G communication module. In specific implementation, the piezoelectric ceramic sensor collects the pipeline signal, which is then passed through an amplifier circuit, a second-order high-pass filter, and a second-order low-pass cascaded filter to form a 1-3000KHz bandpass filter before entering the audio codec chip. The audio codec chip communicates and transmits audio data with the 4G communication module through I2C and I2S pins. In this embodiment, after level conversion, the 17-18 serial port pins of the 4G communication module are connected to the 4-5 serial port pins of the main control board 50 (MCU) for exchanging device positioning information, device time, and MCU control data; the 11-14 pins of the 4G communication module are connected to a SIM card to exchange the processed leaked audio, positioning information, device time information, and other control commands with the data analysis server.

[0035] like Figure 5As shown, the positioning and timing module 53 is a BeiDou positioning and timing module. Its serial port pins 20-21 are connected to serial port pins 2-3 of the main control board 50 (MCU) to provide the MCU with high-precision positioning information and unified timing information provided by the BeiDou module. The antenna 60 includes a 4G antenna 61 connected to the 4G communication module, a BeiDou antenna 62 connected to the BeiDou positioning and timing module, and a WiFi antenna 63 electrically connected to the main control board 50, used for short- and long-distance data interaction or equipment debugging.

[0036] like Figure 6 As shown, pin 20 of the main control board 50 (MCU) controls the power supply module switch of the 4G communication module, and pin 14 controls the power supply module switch of the Beidou positioning and timing module. At the same time, the MCU supports multiple low-power modes, including sleep mode and deep sleep mode. The MCU has a high-precision clock function and can flexibly switch between different working modes according to the working needs. By reasonably configuring the low-power mode and the high-precision clock, the power supply of other power-consuming modules can be reasonably controlled, so that the device can maintain high performance while effectively extending battery life and reducing maintenance costs.

[0037] In some embodiments, such as Figure 1 As shown, in order to prevent the device from being stolen or accidentally lost after deployment, an anti-theft ring 21 is fixed to the top of the top cover 20, which is convenient to use an anti-theft pull rope or the like for fixing.

[0038] The working process of this application embodiment can be summarized as follows: After the device is fixed to the pipe by the magnetic adsorption component 70, the device enters a long-term low-power standby state. The main control board 50 is woken up according to the preset time, and the control signal acquisition circuit 54 and acoustic sensor 51 acquire a segment of acoustic data. At the same time, the Beidou positioning and timing module 53 is briefly turned on to obtain accurate information. After binding the two, the 4G communication module is briefly turned on to report the data packet to the server through the 4G antenna 61. After the task is completed, all high-power modules are immediately turned off and the device re-enters standby.

[0039] Secondly, this application provides an online pipeline leakage acoustic detection method, applied to the online pipeline leakage acoustic detection device described in any embodiment of the first aspect, the method comprising the following steps: a) The device is attached to the pipe surface by the magnetic adsorption component 70; and during non-working periods, the main control board 50 actively disconnects the power supply path connected to the wireless communication module 52 and the positioning and timing module 53, so that the device enters a low-power standby state.

[0040] b) According to the preset time strategy, the main control board 50 is woken up, and the main control board 50 controls the acoustic sensor 51 to collect acoustic signal data of the pipeline.

[0041] c) The main control board 50 temporarily connects the power supply of the positioning and timing module 53 to obtain the current location information and time information, and binds the information with the acoustic signal data to form target data.

[0042] d) The main control board 50 temporarily connects the power supply of the wireless communication module 52 and sends the target data to the preset server through the antenna 60.

[0043] e) After the target data is sent, the main control board 50 actively disconnects the power supply path connected to the wireless communication module 52 and the positioning and timing module 53 again, so that the device returns to the low-power standby state described in step a).

[0044] By repeatedly executing the above steps, the method of this application embodiment can achieve long-term, automatic, and high-precision acoustic monitoring of pipeline leaks with extremely low average power consumption.

[0045] The online pipeline leakage acoustic detection device and method designed in this application achieve convenient deployment on metal pipelines through the magnetic adsorption component at the bottom of its housing; at the same time, its main control board actively controls the power supply of the wireless communication module and the positioning and timing module during non-working periods according to a preset strategy, reducing the standby power consumption of the device and extending the battery life, thereby meeting the needs of large-scale, unattended long-term online monitoring.

[0046] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] Finally, it should be noted that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An online pipeline leak acoustic detection apparatus, characterised in that, The device includes a housing, a top cover, a bottom cover, and a power module. The top and bottom covers are sealed and fixed to the top and bottom of the housing, respectively, to define an accommodating space. The power module is fixed to the bottom cover and housed within the accommodating space. The top cover has a main control board and an antenna electrically connected to the main control board. The main control board is housed within the accommodating space and electrically connected to the power module. The main control board is also electrically connected to an acoustic sensor, a wireless communication module, and a positioning and timing module. The acoustic sensor is housed within the accommodating space and is used to collect acoustic signals from the pipe. The wireless communication module is mounted on the top cover and housed within the accommodating space. A magnetic adsorption assembly is provided on the outer bottom of the housing to detachably adsorb and fix the device to an external metal component. The main control board is configured to actively control the power supply to the wireless communication module and the positioning and timing module according to a preset operating strategy, so as to disconnect the power supply to the wireless communication module and the positioning and timing module during non-operation periods.

2. An online pipeline leak acoustic detection apparatus according to claim 1, characterised in that, Both the top cover and the bottom cover are at least partially fitted inside the housing; wherein, double protective rubber rings for sealing are provided between the top cover and the housing, and between the bottom cover and the housing.

3. An online pipe leak acoustic detection apparatus according to claim 2, characterised in that, The dual protective rubber rings include: a first protective rubber ring facing the inner side of the receiving space, which is made of hydrogenated nitrile rubber; and a second protective rubber ring facing the outer side of the receiving space, which is made of EPDM rubber.

4. The online pipeline leak acoustic detection apparatus of claim 1, wherein, The main control board also integrates a signal acquisition circuit, which is electrically connected to the acoustic sensor and includes an amplifier circuit, a bandpass filter, and an audio codec connected in sequence.

5. An online pipe leak acoustic detection apparatus according to claim 4, wherein, The passband frequency range of the bandpass filter is 1Hz to 3000Hz.

6. The online pipe leak acoustic detection apparatus of claim 1, wherein, The magnetic adsorption assembly includes a powerful magnet and a rubber gasket disposed between the contact surface of the powerful magnet and the external metal component.

7. The online pipe leak acoustic detection apparatus of claim 1, wherein, The acoustic sensor is a piezoelectric ceramic sensor.

8. The online pipe leak acoustic detection apparatus of claim 1, wherein, The wireless communication module is a 4G communication module, and the positioning and timing module is a BeiDou positioning and timing module; the antenna includes a 4G antenna connected to the 4G communication module, a BeiDou antenna connected to the BeiDou positioning and timing module, and a WiFi antenna electrically connected to the main control board.

9. The online pipeline leakage acoustic detection device according to claim 1, characterized in that, An anti-theft ring is fixed to the outer top of the top cover.

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