Noise-based equipment for positioning water leakage of urban pipe network

Abstract

A noise-based device for positioning water leakage of an urban pipe network belongs to the technical field of detection equipment and comprises a storage battery, a shell, a bottom shell, a balancing weight, a piezoelectric ceramic piece, a base cover, a magnet, a 4G antenna, a single-chip microcomputer module, a GPS / Beidou module, an audio acquisition and amplification module and a cat1 module. The storage battery, the single-chip microcomputer module, the GPS / Beidou module, the audio acquisition and amplification module, the cat1 module and the charging socket are installed in the shell and electrically connected, the 4G antenna is installed outside the upper end of the shell, the upper end of the bottom shell is installed at the lower end of the shell, the balancing weight and the piezoelectric ceramic piece are installed at the inner side end of the bottom shell, the base cover is installed at the lower end of the bottom shell, and the magnet is installed at the lower end of the base cover. The device is compact in structure and convenient to use, when the pipeline leaks, the position of a leakage point can be accurately obtained through the existing mature Internet of Things technology, convenience is brought to relevant personnel to detect and maintain the pipeline leakage point in time, and leakage-free water supply of a pipe network is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of detection equipment technology, and in particular to a noise-based device for locating leaks in urban pipe networks. Background Technology

[0002] With the rapid urbanization in my country, the construction of water supply networks is increasing. As a crucial component of infrastructure, urban water supply networks significantly impact the quality of life for urban residents and economic development. However, due to factors such as pipe aging, seal failure at pipe joints, and external pressure, leakage problems are becoming increasingly serious during the long-term operation of water supply networks. Therefore, improving leakage detection technology and quickly and accurately locating leaks is essential for reducing network leakage rates and conserving water resources.

[0003] Currently, the main methods for detecting leaks in pipeline networks include the following: (1) Manual listening rod detection: Specifically, professional leak detectors use listening rods to directly contact the pipes or valves and rely on experience to determine the leak point. However, this method relies on manual operation, requires high skill levels from relevant personnel, and is highly subjective, making it difficult to adapt to the real-time monitoring needs of large-scale pipeline networks. (2) Electronic leak detector and ground probe detection: Specifically, a microphone is used to collect pipeline vibration signals, and the leak sound is analyzed through signal processing methods such as amplification and filtering. However, this method can only roughly determine whether there is a leak at the installation point and cannot accurately locate the leak point. Personnel still need to go to the site to check the leak point, and the detection efficiency is relatively low. (3) Pipeline network flow balance analysis detection: Specifically, the flow data of different pipe sections monitored by flow sensors installed at different locations on the pipeline are combined with mathematical models to calculate the leakage area. However, this method is suitable for macroscopic leakage analysis and also has the problem of difficulty in accurately locating specific leak points. It also requires a large amount of historical data support, and its application is limited. Therefore, there is an urgent need for an efficient, accurate, and automated leak detection device to improve the management level of pipeline network leakage detection. Utility Model Content

[0004] To overcome the shortcomings of existing water supply pipeline leak detection equipment, which are limited by structure and functionality as described in the background art, this utility model provides a device that, under the combined action of related structures, has two sets of equipment respectively attached to both sides of the monitored pipeline. The overall circuit is timed by a GPS / BeiDou module. When there is a leak in the pipeline, the vibration signal generated is amplified and transmitted wirelessly in real time via a CAT1 module. By using existing mature IoT data transmission, reception, and analysis technologies, the time difference between the arrival of the sound source at the two devices can be used to accurately determine the location of the leak. This provides convenience for relevant personnel to promptly detect and repair pipeline leaks and ensures a leak-free water supply network. This is a noise-based leak location device for urban pipeline networks.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A noise-based device for locating leaks in urban pipe networks includes a battery, a housing, a bottom shell, a counterweight, a piezoelectric ceramic plate, a base cover, a magnet, a 4G antenna, a microcontroller module, a GPS / BeiDou module, an audio acquisition and amplification module, and a CAT1 module. The battery, microcontroller module, GPS / BeiDou module, audio acquisition and amplification module, CAT1 module, and charging socket are installed inside the housing. The 4G antenna is installed on the upper exterior of the housing, and the 4G antenna is electrically connected to the antenna input port of the CAT1 module. The upper part of the bottom shell is installed on the lower part of the housing, the counterweight and piezoelectric ceramic plate are installed on the inner side of the bottom shell, the base cover is installed on the lower part of the bottom shell, and the magnet is installed on the lower part of the base cover. The piezoelectric ceramic plate is electrically connected to the signal input terminal of the audio acquisition and amplification module, and the signal output terminal of the audio acquisition and amplification module is electrically connected to the signal input terminal of the microcontroller module. One signal output terminal of the microcontroller module is electrically connected to the signal input terminal of the CAT1 module, and the interaction terminal of the microcontroller module is electrically connected to the interaction terminal of the GPS / BeiDou module.

[0007] Furthermore, the bottom shell, counterweight, and base cover are made of metal; the outer shell is made of plastic.

[0008] Furthermore, the magnet is a permanent neodymium iron boron magnet sheet.

[0009] Furthermore, the sound-transmitting surface of the piezoelectric ceramic sheet is in close contact with the inner end of the bottom shell.

[0010] Furthermore, the microcontroller module is also equipped with an NFC wireless radio frequency module, and the signal input terminal of the NFC wireless radio frequency module is electrically connected to the second signal output terminal of the microcontroller module.

[0011] Furthermore, the audio acquisition and amplification module is model AD8608, which itself has a bandpass filter circuit composed of a charge amplifier, a high-pass filter, and a low-pass filter.

[0012] Furthermore, the main control chip of the microcontroller module is STM32; the GPS / BeiDou module model is SIM66MD; and the cat1 module model is A7670C.

[0013] Compared with existing technologies, the advantages of this utility model are: This utility model has the advantages of compact structure and ease of use. In specific use, at least two sets are used together, magnetically attached to the front and rear outer ends where there is a risk of pipe leakage. During operation, the microcontroller module, etc., is timed by the GPS / BeiDou module. When there is a pipe leak, the vibration signal generated is collected and amplified by the audio acquisition and amplification module, and then transmitted wirelessly in real time via the CAT1 module. Using existing mature IoT data transmission, reception, and analysis technologies, combined with the positioning data from the GPS / BeiDou module, the leak location can be accurately determined by the time difference between the sound source and the two devices. Furthermore, personnel can approach the device and receive relevant data via NFC wireless radio frequency module through smartphones, etc., bringing convenience to relevant personnel for timely detection and repair of pipe leaks and ensuring a leak-free water supply to the pipeline network. Based on the above, this utility model has good application prospects. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is the circuit diagram of this utility model. Detailed Implementation

[0017] Figure 1 , 2 As shown, a noise-based device for locating leaks in urban pipe networks includes a battery G1, a charging socket CZ1, a housing 1, a bottom shell 2, a counterweight 3, a piezoelectric ceramic plate B, a base cover 5, a magnet 6, a 4G antenna 4, a microcontroller module A2, a GPS / BeiDou module A3, an audio acquisition and amplification module A1, and a CAT1 module A4. The battery G1, microcontroller module A2, GPS / BeiDou module A3, audio acquisition and amplification module A1, CAT1 module A4, and charging socket CZ1 are mounted on the lower circuit board inside the housing 1. The 4G antenna 4 is sealed and mounted on the upper outer middle of the housing 1, and the lower end of the 4G antenna 4 is connected to the antenna access port of the CAT1 module A4 via a wire. The upper end of the bottom shell 2 is fixedly mounted on the lower outer end of the housing 1. The counterweight 3 is fixedly mounted on the upper middle of the bottom shell 2. The piezoelectric ceramic plate B is fixedly mounted on the right side of the bottom shell 2. The base cover 5 is sealed and mounted on the lower end of the bottom shell 2 via a thread. The upper end of the magnet 6 is glued and fixedly mounted on the lower outer end of the base cover 5.

[0018] Figure 1 , 2As shown, the bottom shell 2, counterweight 3, and base cover 5 are made of metal; the outer shell 1 is made of plastic. Magnet 6 is a permanent neodymium iron boron strong magnet. The right side of the sound transmission surface of the piezoelectric ceramic sheet B is closely attached to the right side of the inner side of the bottom shell 2. The battery G1 can also be replaced by a finished AC 220V to DC 5V power supply module; the microcontroller module A2 is also equipped with an NFC wireless radio frequency module A5, and the signal input terminal of the NFC wireless radio frequency module A5 and the second signal output terminal of the microcontroller module A2 are connected by wires. The audio acquisition and amplification module A1 is model AD8608, which has its own charge amplifier, high-pass filter, and low-pass filter band-pass filter circuit. The main control chip of the microcontroller module A2 is STM32; the GPS / BeiDou module A3 is model SIM66MD; and the CAT1 module A4 is model A7670C. The two terminals of battery G1 (5V lithium battery) and the two terminals of charging socket CZ1 (when battery G1 is depleted, an external power charger can be plugged into the charging socket to charge it), the power input terminals 1 and 2 of microcontroller module A2, the power input terminals 1 and 2 of GPS / BeiDou module A3, the power input terminals 1 and 2 of audio acquisition and amplification module A1, and the power input terminals 1 and 2 of CAT1 module A4 are connected by wires. The two terminals of piezoelectric ceramic plate B and the two signal input terminals of audio acquisition and amplification module A1 are connected by wires. The signal output terminal of audio acquisition and amplification module A1 and the signal input terminal of microcontroller module A2 are connected by wires. One of the signal output terminals of microcontroller module A2 and the signal input terminal of CAT1 module A4 are connected by wires. The interaction terminal of microcontroller module A2 and the interaction terminal of GPS / BeiDou module A3 are connected by wires.

[0019] Figure 1 , 2As shown, after the 5V DC power output from battery G1 enters the power input terminals of microcontroller module A2, GPS / BeiDou module A3, audio acquisition and amplification module A1, and CAT1 module A4, the above modules are powered on and operate. This new type has the advantages of compact structure and convenient use. In specific use, at least two sets are used together, and are attracted by magnet 6 to the front and rear outer ends where there is a safety risk of water leakage in the pipe. After the audio acquisition and amplification module A1 is powered on, the vibration signal generated by the water leakage in the pipe is received by the piezoelectric ceramic plate B and then output to the signal input terminal of the audio acquisition and amplification module A1 (when the pipe is leaking, the water flow will hit the pipe wall, generating vibration and noise; changes in water pressure will cause the pipe to vibrate, thereby generating noise; air vibration forms air pockets in the pipe, which will generate vibration and noise when water flows through them). Under its own function, the audio acquisition and amplification module A1 amplifies the input signal and removes interference before outputting it to the signal input terminal of microcontroller module A2. The microcontroller module A2 converts the dynamically changing analog voltage signal (the higher the leakage, the higher the signal, and vice versa) into a digital signal. This digital signal is then time-synchronized by the microcontroller module and output to the signal input of the CAT1 module A4. The digital signal is transmitted wirelessly in real-time via the CAT1 module. Utilizing mature IoT data transmission, reception, and analysis technologies, combined with GPS / BeiDou positioning data, remote management personnel can pinpoint the leak location via PC or smartphone (smart device) by measuring the time difference between the sound source and the two devices. Specifically, the smart device receives the GPS / BeiDou positioning data, determines the approximate leak location, and uses a cross-correlation algorithm (a mature technology that calculates the time delay by comparing the similarity of two signals at different time differences, thus achieving signal matching or precise positioning) to determine the exact leak point. In this new system, personnel can also approach the device and receive relevant data (leakage data signal output from the microcontroller module) via the NFC wireless radio frequency module A5 and a smartphone, facilitating timely detection and repair of pipeline leaks and ensuring a leak-free water supply to the pipeline network. The applicant needs to emphasize that the technical solution in this application, which involves "the microcontroller module A2 collecting and amplifying audio signals via a microphone or piezoelectric ceramic plate, the microcontroller module converting the input analog signal into a digital signal, the cat1 module transmitting the digital signal remotely, the GPS / BeiDou module providing timing and positioning, and the PC or smartphone (smart device) calculating the location of the leakage point based on the time difference signal," uses existing mature circuit modules combined with existing and extremely mature IoT data acquisition, processing, transmission, reception, and display technologies to achieve the invention's purpose. It does not involve software technologies that do not exist in the prior art.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise-based device for locating leaks in urban pipe networks, comprising a battery, a casing, a base, a counterweight, a piezoelectric ceramic plate, a base cover, a magnet, a 4G antenna, a microcontroller module, a GPS / BeiDou module, an audio acquisition and amplification module, and a CAT1 module; characterized in that, The battery, microcontroller module, GPS / BeiDou module, audio acquisition and amplification module, CAT1 module, and charging socket are installed inside the housing. The 4G antenna is installed on the upper exterior of the housing, and the 4G antenna and the antenna input port of the CAT1 module are electrically connected. The upper part of the bottom shell is installed on the lower part of the housing. The counterweight and piezoelectric ceramic sheet are installed on the inner side of the bottom shell. The base cover is installed on the lower part of the bottom shell, and the magnet is installed on the lower part of the base cover. The piezoelectric ceramic sheet and the signal input terminal of the audio acquisition and amplification module are electrically connected, and the signal output terminal of the audio acquisition and amplification module is electrically connected to the signal input terminal of the microcontroller module. One of the signal output terminals of the microcontroller module is electrically connected to the signal input terminal of the CAT1 module, and the interaction terminal of the microcontroller module is electrically connected to the interaction terminal of the GPS / BeiDou module.

2. The noise-based device for locating leaks in urban pipe networks according to claim 1, characterized in that, The bottom shell, counterweight, and base cover are made of metal; the outer shell is made of plastic.

3. The noise-based device for locating leaks in urban pipe networks according to claim 1, characterized in that, The magnet is a permanent neodymium iron boron magnet sheet.

4. The noise-based device for locating leaks in urban pipe networks according to claim 1, characterized in that, The sound transmission surface of the piezoelectric ceramic sheet is in close contact with the inner end of the bottom shell.

5. The noise-based device for locating leaks in urban pipe networks according to claim 1, characterized in that, The microcontroller module is also equipped with an NFC wireless radio frequency module. The signal input terminal of the NFC wireless radio frequency module is electrically connected to the second signal output terminal of the microcontroller module.

6. The noise-based device for locating leaks in urban pipe networks according to claim 1, characterized in that, The audio acquisition and amplification module is model AD8608, which has its own bandpass filter circuit consisting of a charge amplifier, a high-pass filter, and a low-pass filter.

7. The noise-based device for locating leaks in urban pipe networks according to claim 1, characterized in that, The main control chip for the microcontroller module is STM32; the GPS / BeiDou module model is SIM66MD; and the cat1 module model is A7670C.

Images