Method and device for improving leak detection accuracy of a pipeline by means of a detection device

Abstract

The application relates to the technical field of geotechnical engineering detection and testing. In particular, it relates to a method and equipment for improving the leakage detection precision of a pipeline through a detection device. The detection device comprises a host, an electric field source assembly, a receiving electrode assembly and a reference electrode. The method comprises the following steps: obtaining a plurality of first potential differences and a plurality of second potential differences; calculating a first-second potential difference according to the first potential difference and the second potential difference, wherein the first-second potential difference is used for detecting whether the pipeline has leakage; if the pipeline has leakage, sending an N-time emission instruction to the electric field source assembly, determining a second average normalized value and a first average normalized value according to N-time obtained receiving electric signals, if there is a target first average normalized value, the target first average normalized value is greater than a target multiple of the second average normalized value, and the leakage position of the pipeline is determined according to the horizontal coordinate information corresponding to the target first average normalized value. The scheme greatly improves the leakage detection precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geotechnical engineering detection and testing, in particular to a method and device for improving the leakage detection accuracy of a pipeline through a detection device. BACKGROUND

[0002] Drainage pipelines are important infrastructure for maintaining the normal operation of cities, and undertake the tasks of urban rainwater, sewage collection, transportation and treatment. According to statistics, the length of urban drainage pipelines in China exceeded 870,000 kilometers in 2021. The length of urban drainage pipelines is maintaining a high growth trend. At the same time, with the increase of the use time of drainage pipelines and the occurrence of geological activities, pipeline rupture leading to leakage occurs from time to time. Drainage pipeline leakage is divided into external leakage and internal leakage. External leakage can seriously pollute groundwater and affect the health and safety of residents; internal leakage can increase the cost of sewage treatment plants and reduce the processing efficiency. In addition, pipeline leakage can affect the soil around the pipeline, causing soil erosion and leading to the formation of underground disease bodies and possibly causing road collapse, threatening people's life and property safety. Therefore, timely detection of drainage pipeline leakage and accurate detection of the location of drainage pipeline leakage points play an important role in the normal and safe operation of cities.

[0003] However, in the prior art, there are still many difficulties in positioning the leakage point of the drainage pipeline in the complex urban environment. For example, the infrared thermal imaging method is easily affected by the environment temperature and underground water; the CCTV (Closed-Circuit Television) video equipment method and the sonar method mostly need to be pre-washed, and have certain requirements for the detection operating water level. The current mainstream drainage pipe material is non-metal. The physical properties of non-metallic materials are not significantly different from the surrounding soil, so when traditional geophysical methods such as ground penetrating radar are applied, the detection depth, resolution and positioning accuracy are limited. Therefore, it is necessary to improve the detection and positioning capability of the leakage point of the drainage pipeline in the complex urban environment. SUMMARY

[0004] In order to solve the above problems, the present application provides a method and device for improving the leakage detection accuracy of a pipeline through a detection device.

[0005] According to one aspect of the present application, a method for improving the leakage detection accuracy of a pipeline through a detection device is provided, which is applied to a non-metal pipeline, and the detection device includes a host and an electric field source assembly, a receiving electrode assembly and a reference electrode electrically connected to the host respectively; wherein the receiving electrode assembly is arranged in the detection area of the pipeline, and a plurality of receiving electric signals are obtained through the receiving electrode assembly; the reference electrode is arranged at the tail end of the detection area of the pipeline, and a reference electric signal is obtained through the reference electrode; the method comprises:

[0006] acquire a plurality of first potential differences and a plurality of second potential differences; wherein the potential difference comprises a potential difference value between the received electric signal and the reference electric signal, the first potential difference is acquired before sending the emission instruction to the electric field source assembly, and the second potential difference is acquired after sending the emission instruction to the electric field source assembly;

[0007] According to the plurality of first potential differences and the plurality of second potential differences, a plurality of first and second potential differences are calculated, wherein the plurality of first and second potential differences are used to detect whether the pipeline has a leakage, if the pipeline has a leakage, there is a target first and second potential difference in the plurality of first and second potential differences, and the difference between the target first and second potential difference and the previous first and second potential difference located before the target first and second potential difference is equal to or greater than a target difference value;

[0008] If the pipeline has a leakage, N times of emission instructions are sent to the electric field source assembly, a second average normalized value and a plurality of first average normalized values are determined according to the received electric signals acquired by the receiving electrode assembly N times, if there is a target first average normalized value in the plurality of first average normalized values, the target first average normalized value is greater than the target multiple of the second average normalized value, the leakage position of the pipeline is determined according to the abscissa information corresponding to the target first average normalized value, and N is a positive integer.

[0009] According to an aspect of the present application, a computer device for improving the detection accuracy of pipeline leakage by a detection device is provided, comprising:

[0010] a processor; and

[0011] a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the operations of any of the above methods.

[0012] According to an aspect of the present application, a computer readable medium storing instructions is provided, the instructions, when executed, cause the system to perform the operations of any of the above methods.

[0013] Compared with the prior art, the detection device of the application obtains a plurality of first potential differences when no electric signal is emitted and a plurality of second potential differences when the electric signal is emitted by sending two emission instructions to the electric field source assembly, obtains a plurality of first-second potential differences according to the plurality of first potential differences and the plurality of second potential differences, and detects whether the pipeline has leakage and loss based on the plurality of first-second potential differences. The first-second potential differences obtained by the first potential differences and the second potential differences obtained by the emitted electric signal and the non-emitted electric signal can greatly reduce the influence of the ground potential distribution on the measurement results. When it is determined that the pipeline has leakage, in order to reduce the display of false values, a second average normalized value and a plurality of first average normalized values are obtained by sending N emission instructions to the electric field source assembly, and the specific leakage position of the pipeline is determined based on the second average normalized value, the plurality of first average normalized values and the position coordinate information of the first average normalized value. In summary, the first potential difference and the second potential difference are obtained by twice measurement, the first-second potential difference based on the first potential difference and the second potential difference is used to detect whether the pipeline has leakage, after it is determined that the pipeline has leakage, the received electric signal obtained by N times of emitted electric signal is normalized, the specific leakage position of the pipeline is determined by combining the position coordinate information of the normalized value, the influence of the ground potential distribution on the measurement results is reduced, the display of false values in the measurement process is further reduced, and the accuracy of the leakage position determination is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the drawings:

[0015] Figure 1 A flow chart of a method for improving the leakage detection accuracy of a pipeline by a detection device according to one embodiment of the application is shown;

[0016] Figure 2 A schematic diagram of a detection device according to one embodiment of the application is shown;

[0017] Figure 3 A schematic diagram of a detection device according to another embodiment of the application is shown;

[0018] Figure 4 A schematic diagram of a detection device according to another embodiment of the application is shown;

[0019] Figure 5 A schematic diagram of a device structure for improving the leakage detection accuracy of a pipeline by a detection device according to one embodiment of the application is shown;

[0020] Figure 6 An exemplary system that can be used to implement various embodiments of the application is shown.

[0021] Explanation of reference signs: 1, host; 2, first electric field source probe; 3, receiving electrode assembly; 4, reference electrode; 5, pipeline; 6, liquid; 7, inspection port. DETAILED DESCRIPTION

[0022] The application will be described in further detail below with reference to the drawings.

[0023] In one typical configuration of the present application, the terminal, the device of the service network and the trusted party each include one or more processors (e.g., Central Processing Unit (CPU)), input / output interface, network interface and memory.

[0024] The memory can include non-persistent memory in computer-readable media, Random Access Memory (RAM), and / or non-volatile memory such as Read Only Memory (ROM) or Flash memory. The memory is an example of computer-readable media.

[0025] Computer-readable media includes permanent and non-permanent, removable and non-removable media which can be implemented by any method or technology for storing information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, Phase-Change Memory (PCM), Programmable Random Access Memory (PRAM), Static Random-Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read-Only Memory (ROM), Electrically-Erasable Programmable Read-Only Memory (EEPROM), flash memory or other memory technologies, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cassette, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0026] The device referred to in the present application includes but is not limited to a terminal, a network device, or a device formed by integrating a terminal and a network device through a network. The terminal includes but is not limited to any kind of mobile electronic product capable of human-computer interaction (for example, human-computer interaction through a touch panel) with a user, such as a smart phone, a tablet computer, etc. The mobile electronic product can adopt any operating system, such as an Android operating system, an iOS operating system, etc. The network device includes an electronic device capable of automatically performing numerical calculation and information processing according to a pre-set or stored instruction. The hardware of the network device includes but is not limited to a microprocessor, an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), a digital signal processor (DSP), an embedded device, etc. The network device includes but is not limited to a computer, a network host, a single network server, a plurality of network servers, or a cloud formed by a plurality of servers. Here, the cloud is formed by a large number of computers or network servers based on cloud computing. The cloud computing is a kind of distributed computing, which is a virtual supercomputer formed by a group of loosely coupled computer clusters. The network includes but is not limited to the Internet, a wide area network, a metropolitan area network, a local area network, a VPN network, a wireless Ad Hoc network, etc. Preferably, the device can also be a program running on a terminal, a network device, or a device formed by integrating a terminal and a network device, a network device, a touch terminal, or a device formed by integrating a touch terminal and a network device through a network.

[0027] Of course, those skilled in the art should understand that the above device is only an example, and other existing or future devices that can be applicable to the present application should also be included in the protection scope of the present application, and are hereby included by reference.

[0028] In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0029] Figure 1 A method for improving the leakage detection accuracy of a pipeline 5 by detecting a device is shown according to an embodiment of the present application, which is applied to a non-metal pipeline 5. As shown in Figure 2 、 Figure 3 、 Figure 4As shown, the detection device includes a main unit (reference numeral 1) and an electric field source component, a receiving electrode component 3, and a reference electrode 4, all electrically connected to the main unit (reference numeral 1). The receiving electrode component 3 is located in the detection area of ​​the pipe 5, and multiple received electrical signals are acquired through the receiving electrode component 3. The reference electrode 4 is located at the detection tail end of the pipe 5, and a reference electrical signal is acquired through the reference electrode 4. The method includes steps S11, S12, and S13. In step S11, multiple first potential differences and multiple second potential differences are acquired. The potential difference includes the potential difference between the received electrical signal and the reference electrical signal. The first potential difference is acquired before sending a transmission command to the electric field source component, and the second potential difference is acquired after sending a transmission command to the electric field source component. In step S12, based on the multiple first potential differences and multiple second potential differences... Multiple first and second potential differences are calculated, and these multiple first and second potential differences are used to detect whether there is a leak in the pipe 5. If there is a leak in the pipe 5, a target first and second potential difference exists among the multiple first and second potential differences. The difference between this target first and second potential difference and the preceding first and second potential difference is equal to or greater than the target difference. In step S13, if there is a leak in the pipe 5, N transmission commands are sent to the electric field source component. A second average normalized value and multiple first average normalized values ​​are determined based on the received electrical signals acquired by the receiving electrode component 3N times. If a target first average normalized value exists among the multiple first average normalized values, and this target first average normalized value is greater than a second average normalized value that is a multiple of the target, the horizontal coordinate information corresponding to the target first average normalized value is determined as the leak location of the pipe 5, where N is a positive integer. In some embodiments, the filling degree of the non-metallic pipe 5 is greater than 0.2. In some embodiments, the electric field source assembly includes a first electric field source probe 2 and a second electric field source probe (not shown). The first and second electric field source probes include dipole sources, and an electric field is formed by emitting electrical signals through the first and second electric field source probes. For a detailed description of the electric field source assembly, please refer to the corresponding embodiments below; it will not be repeated here. The receiving electrode assembly 3 includes multiple receiving electrodes arranged in an array, and the received electrical signals are acquired through the receiving electrode assembly 3. In some embodiments, the receiving electrode assembly 3 is disposed in the detection area of ​​the pipe 5 (e.g., directly above or near the pipe segment to be tested, ensuring that the receiving electrodes are continuously arranged parallel to the direction of the pipe segment to be tested). In some embodiments, the vertical distance D from the receiving electrode to the upper surface of the pipe 5 is ≤ (100 × I(A)) / (R(Ω)), where I(A) includes the emission current of the electric field source probe, and R(Ω) includes the grounding resistance of the emission circuit. In some embodiments, R(Ω) can be measured when no electrical signal is emitted, or it can be calculated by the emission voltage / emission current when an electrical signal is emitted. In some embodiments, as... Figures 2-4As shown, the reference electrode 4 is arranged at the detection tail end of the pipeline 5. In some embodiments, the detection tail end includes, but is not limited to, a position along the direction of the pipeline 5, on the side of the receiving electrode assembly 3, and at a certain distance from the first electric field source probe 2. The farther the distance, the more stable the reference electric signal collected by the reference electrode 4. In this embodiment, the electric field is formed by the electric field source assembly, the receiving electrode assembly 3 collects a plurality of receiving electric signals in the electric field, and the reference electrode 4 collects a stable reference electric signal.

[0030] Specifically, in step S11, a plurality of first potential differences and a plurality of second potential differences are obtained; wherein the potential difference includes the potential difference value between the receiving electric signal and the reference electric signal, the first potential difference is obtained before sending the transmission instruction to the electric field source assembly, and the second potential difference is obtained after sending the transmission instruction to the electric field source assembly. For example, a plurality of first potential differences are obtained by the receiving electrode assembly and the reference electrode when the electric field source assembly does not emit, and a plurality of second potential differences are obtained by the receiving electrode assembly and the reference electrode after the electric field source assembly emits. Specifically, for example, when the electric field source assembly does not emit, the potential difference between each receiving electrode of the receiving electrode assembly and the reference electrode is measured, and the measured potential difference value is the first potential difference (for example, , , … ). Then when the electric field source assembly emits the electric signal, the potential difference between each receiving electrode of the receiving electrode assembly and the reference electrode is measured, and the measured potential difference value is the second potential difference (for example, , , … ). In this embodiment, the first potential difference and the second potential difference are obtained when the electric field source assembly emits and does not emit, thereby reducing the influence of the ground potential distribution. The first potential difference and the second potential difference are used to determine whether the pipeline has a leakage.

[0031] In step S12, a plurality of first-second potential differences are calculated according to the plurality of first potential differences and the plurality of second potential differences, wherein the plurality of first-second potential differences are used to detect whether the pipeline has a leakage, if the pipeline has a leakage, there is a target first-second potential difference in the plurality of first-second potential differences, and the difference between the target first-second potential difference and the previous first-second potential difference located before the target first-second potential difference is equal to or greater than a target difference value. For example, each first potential difference has a corresponding second potential difference, in other words, the plurality of first potential differences and the plurality of second potential differences are one-to-one corresponding. The first-second potential difference includes the difference between the first potential difference and the second potential difference corresponding to the first potential difference. For example, the plurality of first-second potential differences include , here, includes the first-second potential difference, includes the first potential difference, The first and second potential differences correspond to a third potential difference. In some embodiments, the third potential difference is obtained based on the first and second potential differences, and the first and second potential differences are obtained based on the received electrical signals collected by the receiving electrodes, and the corresponding first and second potential differences are obtained based on the same receiving electrode. Therefore, the first and second potential differences also correspond to the receiving electrode, and the arrayed receiving electrodes exist in a distance from the transmitting source of the electric field source assembly from near to far, and the first and second potential differences corresponding to the receiving electrode include the receiving electrodes located before the target first and second potential differences corresponding to the receiving electrode. In some embodiments, if the pipeline does not have a leakage, the plurality of first and second potential differences are monotonically decreasing away from the electric field source assembly, and therefore, when the pipeline has a leakage, there is a target first and second potential difference, and the difference between the target first and second potential difference and the previous first and second potential difference located before the target first and second potential difference is equal to or greater than the target difference value (for example, the first and second potential differences are not monotonically decreasing, but there is a mutation). In this embodiment, the specific leakage position of the pipeline is detected based on the plurality of first and second potential differences, which greatly improves the leakage detection accuracy.

[0032] In step S13, if the pipeline has a leakage, N emission instructions are sent to the electric field source assembly, a second average normalized value and a plurality of first average normalized values are determined according to the N times of receiving electric signals obtained by the receiving electrode assembly, if there is a target first average normalized value in the plurality of first average normalized values, the target first average normalized value is greater than the target multiple of the second average normalized value, the leakage position of the pipeline is determined according to the horizontal coordinate information corresponding to the target first average normalized value, and N is a positive integer. In this embodiment, whether the pipeline has a leakage is detected based on the plurality of first potential differences and the plurality of second potential differences, and the specific leakage position of the pipeline is determined based on the second average normalized value and the first average normalized value. In some embodiments, in order to further reduce the existence of false values, after it is determined that the pipeline has a leakage, N emission instructions are sent to the electric field source assembly, a second average normalized value and a plurality of first average normalized values are calculated according to N times of receiving electric signals, and the specific leakage position of the pipeline is determined based on the second average normalized value and the plurality of first average normalized values. In some embodiments, the first normalized value is obtained by normalizing each receiving electric signal, the first average normalized value is obtained by averaging a plurality of first normalized values of the same position coordinate information, and the second average normalized value is obtained by averaging a plurality of first average normalized values. For specific descriptions of the first average normalized value and the second average normalized value, please refer to the corresponding embodiments below, which will not be repeated here. In some embodiments, each first average value corresponds to position coordinate information, if there is a target first average normalized value, the target first average normalized value is greater than the target multiple (for example, 1.1 times) of the second average normalized value, and then the leakage position of the pipeline is determined according to the horizontal coordinate information (for example, a) corresponding to the target first average normalized value. For example, if the starting point of the to-be-tested pipeline section is taken as the coordinate origin, the position with a distance of a from the starting point of the to-be-tested pipeline section is the leakage position. For another example, if the first electric field source probe is taken as the coordinate origin to establish a coordinate axis, the position with a distance of a from the first electric field source probe is the leakage position. In some embodiments, if the first electric field source probe is linear, the center of the first electric field source probe can be taken as the coordinate origin.

[0033] In some embodiments, the electric field source assembly includes a first electric field source probe 2 and a second electric field source probe (not shown), wherein the first electric field source probe 2 is arranged inside the liquid 6 in the pipeline 5, and the second electric field source probe is arranged outside the pipeline 5, and a plurality of first potential differences and a plurality of second potential differences are obtained, including: before sending a transmission instruction to the electric field source assembly, a plurality of first potential differences are obtained by the reference electrode 4 and the plurality of receiving electrodes; and sending a transmission instruction to the electric field source assembly, a plurality of second potential differences are obtained by the reference electrode 4 and the plurality of receiving electrodes. In some embodiments, the first electric field source probe 2 and the second electric field source probe include but are not limited to a dipole source. In some embodiments, there is a certain flow of liquid 6 (for example, water) in the pipeline 5 to support the formation of an electric field, and the first electric field source probe 2 is arranged inside the liquid 6 in the pipeline 5 (for example, the bottom of the pipeline 5 or inside the pipeline 5). In some embodiments, the second electric field source probe is arranged outside the pipeline and not arranged along the pipeline. The electric field excitation source signal is mainly a direct current signal, and the first electric field source probe 2 can be a point-like electric emission source (a good conductive metal block, such as Figure 2 shown) or a linear electric emission source (a good conductive metal body, such as Figure 4 shown), and the arrangement of the receiving electrode assembly 3 corresponding to the point-like electric emission source and the linear electric emission source is different. Specifically, referring to Figure 2 when the first electric field source probe 2 is a point-like electric emission source, the point-like electric emission source is placed in the water part of the drain pipe (for example, the pipeline 5) through the inspection port. In some embodiments, the receiving electrode and the reference electrode include but are not limited to a non-polarization electrode. Referring to Figure 3 , a single or multiple measuring lines (preferably an odd number of measuring lines) are arranged above the drain pipe along the direction of the pipeline 5, and a plurality of receiving electrodes (for example, non-polarization electrodes) are arranged on each measuring line. In some embodiments, the first electric field source probe 2 can be moved according to the site conditions, and multiple measurements are performed (as shown in Figure 2 ). However, the moving range of the first electric field source probe 2 is usually not more than 3 times the length of the observation electrode measuring line (for example, the length of the receiving electrode assembly 3 along the direction of the pipeline 5), and the measuring line arrangement range is not more than 1 / 6 of the moving range of the first electric field source probe 2 (as shown in FIG. 2). Referring to Figure 4When the first electric field source probe 2 is a linear electric emission source, the linear electric emission source is placed in the water part of the drain pipe through the inspection port, and the length extends to the other inspection port. A single measuring line or multiple measuring lines (preferably an odd number of measuring lines) are arranged along the direction of the pipeline 5 above the drain pipe. A non-polarized electrode (for example, a receiving electrode) is arranged on the measuring line, and the distance between the electrodes (for example, receiving electrodes) is less than 1 / 2 of the target resolution. The potential value (for example, the received electric signal) at this position is measured. The length of the measuring line is 1 / 3 of the length of the emission source and is located above the middle of the emission source (as shown in FIG. 3). Similar to the point-shaped electric emission source, the arrangement range of the measuring line does not exceed 1 / 6 of the length of the emission source. In this embodiment, due to the fixed anomaly of the non-metal pipeline 5, the first electric field source probe 2 is arranged inside the liquid 6 in the pipeline 5. The electric field formed by the emission of the electric signal from the liquid 6 in the pipeline 5 can be distinguished from the electric field formed on the ground, so that the measurement result is more accurate. Further, in this embodiment, in order to reduce the influence of the ground electric signal, first, when the electric field source assembly does not emit, the potential difference between each receiving electrode of the receiving electrode assembly 3 and the reference electrode 4 is measured. The measured potential difference value is the first potential difference (for example, , , … ) (for example, affected by the urban background electric signal, when the electric field source assembly does not emit the electric signal and forms the electric field of the electric field source assembly, the receiving electrode and the reference electrode can also collect the electric signal). Then, when the electric field source assembly emits the electric signal, the potential difference between each receiving electrode of the receiving electrode assembly and the reference electrode is measured. The measured potential difference value is the second potential difference (for example, , , … ). In this embodiment, the first potential difference and the second potential difference obtained by the emission and non-emission of the electric field source assembly are used to judge whether the pipeline has leakage and loss.

[0034] In some embodiments, the first potential differences are obtained by the reference electrode and the plurality of receiving electrodes before the emission instruction is sent to the electric field source probe; the second potential differences are obtained by the reference electrode and the plurality of receiving electrodes after the emission instruction is sent to the electric field source probe, including: before the emission instruction is sent to the electric field source assembly, a plurality of first receiving electrical signals are collected by the plurality of receiving electrodes, and a first reference electrical signal is collected by the reference electrode; for each first receiving electrical signal, a potential difference value between the first receiving electrical signal and the first reference electrical signal is calculated, and the potential difference value is taken as a first potential difference to obtain a plurality of first potential differences; the emission instruction is sent to the electric field source assembly, an electrical signal is emitted by the electric field source assembly to form an electric field, a plurality of second receiving electrical signals are collected by the plurality of receiving electrodes, and a plurality of second reference electrical signals are collected by the reference electrode; for each second receiving electrical signal, a potential difference value between the second receiving electrical signal and the second reference electrical signal is calculated, and the potential difference value is taken as a second potential difference to obtain a plurality of second potential differences. For example, before the emission instruction is sent to the electric field source assembly, a plurality of first receiving electrical signals are collected by the plurality of receiving electrodes of the receiving electrode assembly, and a first reference electrical signal is collected by the reference electrode; each first receiving electrical signal is subtracted from the first reference electrical signal to obtain a plurality of first potential differences (for example, , , … ). Then, after the emission instruction is sent to the electric field source assembly, a plurality of second receiving electrical signals are collected by the plurality of receiving electrodes of the receiving electrode assembly, and a second reference electrical signal is collected by the reference electrode; each second receiving electrical signal is subtracted from the second reference electrical signal to obtain a plurality of second potential differences (for example, , , … ). In this embodiment, not only the second potential differences of the electrical signals emitted by the electric field source probe are measured, but also the first potential differences of the electric field source probe when no electrical signal occurs are measured, so that the influence of the ground potential distribution is reduced.

[0035] In some embodiments, the first-second potential difference is calculated according to the plurality of first potential differences and the plurality of second potential differences, including: for each first potential difference, determining the second potential difference corresponding to the first potential difference according to the position coordinate information of the first potential difference, to obtain a plurality of groups of corresponding first potential differences and second potential differences, wherein the position coordinate information of the first potential difference is the same as that of the second potential difference corresponding to the first potential difference; for each group of corresponding first potential differences and second potential differences, taking the potential difference value between the first potential difference and the second potential difference as the first-second potential difference, to obtain a plurality of first-second potential differences; and detecting whether the pipeline has a leakage according to the plurality of first-second potential differences, wherein if the pipeline has a leakage, there is a target first-second potential difference in the plurality of first-second potential differences, and the difference between the target first-second potential difference and a previous first-second potential difference located before the target first-second potential difference is equal to or greater than a target difference value. For example, the coordinate can be established with the projection of the starting point of the pipeline segment to be detected to the ground position O as the origin coordinate, the parallel pipeline direction as the X axis, the positive direction of the pipeline detection endpoint direction as the X axis, and the vertical pipeline direction as the Y axis. Each receiving electrode corresponds to position coordinate information. Of course, those skilled in the art can understand that the above coordinate establishment method is only an example, and other existing or future coordinate establishment methods that can be applicable to the present application are also within the protection scope of the present application and are included herein by reference. In some embodiments, the position coordinate information includes horizontal coordinate information and vertical coordinate information. In some embodiments, the first potential difference is calculated based on the first receiving electric signal, and therefore the position coordinate information of the receiving electrode corresponding to the first receiving electric signal is the position coordinate information of the corresponding first potential difference. For example, each first receiving electric signal corresponds to the position coordinate information of the receiving electrode that collects and acquires the first receiving electric signal, and the position coordinate information of the first potential difference obtained based on the first receiving electric signal is the position coordinate information of the first receiving electric signal. Similarly, the second potential difference is obtained based on the second receiving electric signal, and therefore the position coordinate information of the second potential difference obtained based on the second receiving electric signal is the position coordinate information of the second receiving electric signal. The first potential difference is obtained when the electric field source probe is not emitting, and the second potential difference is obtained when the electric field source probe is emitting, and therefore there are first potential differences and second potential differences with the same position coordinate information. In calculating the plurality of first-second potential differences, the system can determine the second potential difference corresponding to the first potential difference according to the position coordinate information of the first potential difference, to obtain a plurality of groups of corresponding first potential differences and second potential differences; further, for each group of corresponding first potential differences and second potential differences, taking the potential difference value between the first potential difference and the second potential difference as the first-second potential difference, to obtain a plurality of first-second potential differences. In other words, the first potential difference and the second potential difference in the same group are obtained based on the same receiving electrode.Furthermore, based on multiple first and second potential differences, the system detects whether there is a leak in the pipeline. If a leak exists, a target first and second potential difference exists among the multiple first and second potential differences. The difference between this target first and second potential difference and the preceding first and second potential difference is equal to or greater than the target difference. In some embodiments, the receiving electrode corresponding to the preceding first and second potential difference includes the receiving electrode located before the receiving electrode corresponding to the target first and second potential difference. In this embodiment, the preceding first and second potential difference can be understood as including the preceding first and second potential differences whose vertical axis is the same as the target first and second potential difference, and whose horizontal axis is before the target first and second potential difference.

[0036] In some embodiments, detecting whether a pipeline has a leak based on multiple first and second potential differences includes: dividing the multiple first and second potential differences into multiple potential difference sets according to the position coordinate information of each first and second potential difference, wherein each potential difference set includes multiple first and second potential differences arranged in sequence, and the ordinate information of the multiple first and second potential differences in the same potential difference set is the same; for each potential difference set, if there is a target first and second potential difference in the potential difference set, and the difference between the target first and second potential difference and the preceding first and second potential difference is equal to or greater than the target difference, it is determined that there is a leak in the pipeline, wherein the preceding first and second potential difference includes the abscissa information of the preceding first and second potential difference being less than the target first and second potential difference. For example, multiple first and second potential differences with the same ordinate information are divided into a potential difference set according to the position coordinate information of multiple first and second potential differences. In some embodiments, the multiple first and second potential differences in each potential difference set are arranged in ascending order of abscissa information (for example, when the starting point of the pipeline to be tested is projected onto the ground as the coordinate origin), for example, the potential difference set [ , , , , ],in, , , , , The horizontal coordinate information is arranged sequentially from smallest to largest. In other embodiments, the multiple first and second potential differences in each potential difference set are arranged in ascending order of size, with the first and second potential difference closest to the coordinate origin as the center (e.g., when the first electric field source probe is used as the coordinate origin). For example, the potential difference set [ , , , , ],in, The position coordinates are closest to the origin (for example, using the x-coordinate information to determine the position). the position coordinate information of the first two potential difference is closest to the coordinate origin, , the abscissa information of the first two potential difference increases in turn, , the abscissa information of the first two potential difference increases in turn. In the embodiment, whether the pipeline has a leakage can be detected based on the position coordinate information of the first two potential difference. For example, for each set of potential difference, if there is a target first two potential difference in the set of potential difference, the difference between the target first two potential difference and a previous first two potential difference located before the target first two potential difference is equal to or greater than a target difference value, and the abscissa information of the previous first two potential difference is less than that of the target first two potential difference, it is determined that the pipeline has a leakage. For example, in the set of potential difference [ , , , , ], , , , , the abscissa information of the first two potential difference is arranged in ascending order from small to large, if the pipeline does not have a leakage, the farther away from the first electric field source probe, , , , , should be strictly monotonically decreasing; if , , , , there is a target first two potential difference in the set of potential difference , the difference between the target first two potential difference and a previous first two potential difference located before the target first two potential difference is equal to or greater than a target difference value, it is determined that the pipeline has a leakage. For another example, in the set of potential difference [ , , , , ], as the center, , the abscissa information of the first two potential difference increases in turn, , the abscissa information of the first two potential difference increases in turn, if the pipeline does not have a leakage, the farther away from the first electric field source probe, , should be strictly monotonically decreasing, , should be strictly monotonically decreasing; if there is a target first two potential difference , the difference between the target first two potential difference and a previous first two potential difference The difference between the first potential difference and the second potential difference located before the first potential difference is equal to or greater than a target difference value, and it is determined that the pipeline has a leakage.

[0037] In some embodiments, if the pipeline has a leakage, N emission instructions are sent to the electric field source assembly, and the second average normalization value and the plurality of first average normalization values are determined based on the received electric signals obtained by the plurality of receiving electrodes N times. If the pipeline has a leakage, N emission instructions are sent to the electric field source assembly, and the plurality of received electric signals are obtained by the plurality of receiving electrodes. For each obtained plurality of received electric signals, the plurality of received electric signals are normalized based on the position coordinate information of the plurality of received electric signals to obtain a first normalization value corresponding to each position coordinate information, thereby obtaining N first normalization values corresponding to each position coordinate information. The average value of N first normalization values corresponding to each position coordinate information is calculated to obtain a first average normalization value corresponding to the position coordinate information. The average value of all first average normalization values is calculated, and the average value is taken as a second average normalization value. If there is a target first average normalization value in the plurality of first average normalization values, the target first average normalization value is greater than the target multiple of the second average normalization value, and the horizontal coordinate information corresponding to the target first average normalization value is determined as the leakage position of the pipeline. In some embodiments, if it is determined that the pipeline has a leakage, N emission instructions are sent to the electric field source assembly of the electric field source assembly, and the plurality of received electric signals obtained by the receiving electrode assembly each time are recorded. In some embodiments, the received electric signals corresponding to each position coordinate information of the same horizontal coordinate information are first normalized to obtain the first normalization value corresponding to each position coordinate information corresponding to the horizontal coordinate information (for example, , where i includes horizontal coordinate information, j includes vertical coordinate information, and k includes the kth emission); then the N first normalization values corresponding to each position coordinate information are averaged to obtain the first average normalization value corresponding to the position coordinate information (for example, ). The above normalization processing is performed on the received electric signals corresponding to each position coordinate information to obtain the first average normalization value corresponding to each position coordinate information, that is, the plurality of first average normalization values are obtained. The plurality of first average normalization values are then averaged to obtain the second average normalization value (for example, ). If there is a target first average normalization value (for example, ) in the plurality of first average normalization values, the target first average normalization value is greater than the target multiple of the second average normalization value (for example, , for example, the target multiple is 1.1), and the target first average normalization value (for example, ​The corresponding abscissa information (for example, a) determines the leakage position of the pipeline (for example, the leakage position is a meter away from the coordinate origin (for example, the starting point of the pipeline to be measured or the first electric field source probe)).

[0038] In some embodiments, for each acquired plurality of received electrical signals, the plurality of received electrical signals is normalized according to the position coordinate information of the plurality of received electrical signals to obtain a plurality of first normalized values corresponding to each position coordinate information, thereby obtaining N first normalized values corresponding to each position coordinate information, including: for each acquired plurality of received electrical signals, the plurality of received electrical signals is divided into a plurality of electrical signal sets according to the position coordinate information of the plurality of received electrical signals, wherein the abscissa information of the plurality of received electrical signals in each electrical signal set is the same; for each electrical signal set, the plurality of received electrical signals in the electrical signal set is normalized to obtain a first normalized value corresponding to a plurality of different abscissa information. For example, received electrical signals with the same abscissa information are divided into the same electrical signal set, and the plurality of received electrical signals in each electrical signal set is normalized. In some embodiments, the normalization of the plurality of received electrical signals includes: {v}_{ijk}=\frac {{u}_{ijk}} {min[{u}_{i1k},{u}_{i2k},{u}_{i3k}...{u}_{iMk}]} Here, k includes the number of transmissions, for example, the kth transmission; i includes the abscissa information; j includes the ordinate information; includes the measurement result of the received electrical signal located at (i, j) at the kth transmission The normalized result (for example, the first normalized value) of includes the measurement result of the received electrical signal located at (i, j) at the kth transmission; min[{u}_{i1k},{u}_{i2k},{u}_{i3k}...{u}_{iMk}] includes the minimum value of the received electrical signal with the same abscissa information i. In this embodiment, for each acquired plurality of received electrical signals, data is divided first, and received electrical signals with the same abscissa information are divided into the same electrical signal set. Then, the received electrical signals in each electrical signal set are normalized to obtain a plurality of first normalized values corresponding to each abscissa information.

[0039] In some embodiments, the method further comprises a step S14 (not shown) before the step of determining the second average normalized value and the plurality of first average normalized values from the received electrical signals acquired N times according to the plurality of receiving electrodes, in which step S14, target received electrical signals are screened according to coordinate information of the received electrical signals, so as to eliminate the target received electrical signals, wherein the position coordinate information of the target received electrical signals is within a target area, and the target area comprises a circle with the first electric field source probe as the center and with a target radius as the radius, and the target radius is obtained by the following calculation method: Herein, d comprises the target radius, and D comprises the vertical distance from the receiving electrode to the upper surface of the pipeline, Herein, I(A) comprises the emission current of the electric field source probe, and R(Ω) comprises the grounding resistance of the emission loop. In some embodiments, it is also necessary to eliminate data (for example, the target received electrical signals) that can be affected by the near-field effect. In some embodiments, the circle of the target area is determined with the position coordinate information of the location where the first electric field source probe is located as the center and with the target radius d as the radius. The received electrical signals corresponding to the position coordinate information covered by the target area are determined as the target received electrical signals. In some embodiments, eliminating the target received electrical signals comprises that the target received electrical signals do not participate in the determination process of the specific leakage position, in other words, the target received electrical signals do not participate in the normalization processing step of the received electrical signals.

[0040] Figure 5A structural diagram of a detection device according to one embodiment of the present application is shown, which is applied to a non-metal pipeline, and the detection device comprises a host and an electric field source assembly, a receiving electrode assembly and a reference electrode which are electrically connected to the host respectively; wherein the receiving electrode assembly is arranged at a detection area of the pipeline, and a plurality of receiving electric signals are obtained through the receiving electrode assembly; the reference electrode is arranged at a detection tail end of the pipeline, and a reference electric signal is obtained through the reference electrode; further comprising a first module, a second module and a third module, the first module is used for obtaining a plurality of first potential differences and a plurality of second potential differences; wherein the potential difference comprises a potential difference value between the receiving electric signal and the reference electric signal, the first potential difference is obtained before sending a transmission instruction to the electric field source assembly, and the second potential difference is obtained after sending the transmission instruction to the electric field source assembly; the second module is used for calculating a plurality of first-second potential differences according to the plurality of first potential differences and the plurality of second potential differences, wherein the plurality of first-second potential differences are used for detecting whether the pipeline has a leakage loss, if the pipeline has a leakage loss, there is a target first-second potential difference in the plurality of first-second potential differences, and a difference value between the target first-second potential difference and a previous first-second potential difference located before the target first-second potential difference is equal to or greater than a target difference value; the third module is used for sending N times of transmission instructions to the electric field source assembly if the pipeline has a leakage loss, determining a second average normalized value and a plurality of first average normalized values according to N times of receiving electric signals obtained by the receiving electrode assembly, if there is a target first average normalized value in the plurality of first average normalized values, the target first average normalized value is greater than a target multiple of the second average normalized value, and a leakage loss position of the pipeline is determined according to horizontal coordinate information corresponding to the target first average normalized value, and N is a positive integer.

[0041] Here, the specific embodiments corresponding to the first module, the second module and the third module are the same as or similar to the specific embodiments of step S11, step S12 and step S13, and thus will not be described again, and are included herein by reference.

[0042] In some embodiments, the electric field source assembly comprises a first electric field source probe and a second electric field source probe, wherein the first electric field source probe is arranged inside a liquid in the pipeline, and the second electric field source probe is arranged outside the pipeline, obtaining the plurality of first potential differences and the plurality of second potential differences comprises: obtaining the plurality of first potential differences through the reference electrode and the plurality of receiving electrodes before sending the transmission instruction to the electric field source assembly; and obtaining the plurality of second potential differences through the reference electrode and the plurality of receiving electrodes after sending the transmission instruction to the electric field source assembly.

[0043] Here, the specific embodiments corresponding to the first module are the same as or similar to the specific embodiments of step S11, and thus will not be described again, and are included herein by reference.

[0044] In some embodiments, the plurality of first potential differences are obtained by the reference electrode and the plurality of receiving electrodes before the emission instruction is sent to the electric field source probe; the plurality of second potential differences are obtained by the reference electrode and the plurality of receiving electrodes after the emission instruction is sent to the electric field source probe, including: before the emission instruction is sent to the electric field source assembly, a plurality of first receiving electrical signals are collected by the plurality of receiving electrodes, and a first reference electrical signal is collected by the reference electrode; for each first receiving electrical signal, a potential difference value between the first receiving electrical signal and the first reference electrical signal is calculated, and the potential difference value is taken as a first potential difference to obtain a plurality of first potential differences; the emission instruction is sent to the electric field source assembly, an electrical signal is emitted by the electric field source assembly to form an electric field, a plurality of second receiving electrical signals are collected by the plurality of receiving electrodes, and a plurality of second reference electrical signals are collected by the reference electrode; for each second receiving electrical signal, a potential difference value between the second receiving electrical signal and the second reference electrical signal is calculated, and the potential difference value is taken as a second potential difference to obtain a plurality of second potential differences.

[0045] Here, the specific embodiments corresponding to the one module are the same as or similar to the specific embodiments of step S11, and thus will not be described again, but are included herein by reference.

[0046] In some embodiments, the plurality of first potential differences are obtained by the reference electrode and the plurality of receiving electrodes before the emission instruction is sent to the electric field source probe; the plurality of second potential differences are obtained by the reference electrode and the plurality of receiving electrodes after the emission instruction is sent to the electric field source probe, including: before the emission instruction is sent to the electric field source assembly, a plurality of first receiving electrical signals are collected by the plurality of receiving electrodes, and a first reference electrical signal is collected by the reference electrode; for each first receiving electrical signal, a potential difference value between the first receiving electrical signal and the first reference electrical signal is calculated, and the potential difference value is taken as a first potential difference to obtain a plurality of first potential differences; the emission instruction is sent to the electric field source assembly, an electrical signal is emitted by the electric field source assembly to form an electric field, a plurality of second receiving electrical signals are collected by the plurality of receiving electrodes, and a plurality of second reference electrical signals are collected by the reference electrode; for each second receiving electrical signal, a potential difference value between the second receiving electrical signal and the second reference electrical signal is calculated, and the potential difference value is taken as a second potential difference to obtain a plurality of second potential differences.

[0047] Here, the specific embodiments corresponding to the one module are the same as or similar to the specific embodiments of step S11, and thus will not be described again, but are included herein by reference.

[0048] In some embodiments, the method for detecting whether the pipeline has a leakage or not according to the plurality of first-second potential differences comprises: dividing the plurality of first-second potential differences into a plurality of potential difference sets according to the position coordinate information of each first-second potential difference, wherein each potential difference set comprises a plurality of first-second potential differences arranged in sequence, and the plurality of first-second potential differences in the same potential difference set have the same longitudinal coordinate information; and for each potential difference set, if there is a target first-second potential difference in the potential difference set, and the difference between the target first-second potential difference and a previous first-second potential difference before the target first-second potential difference is equal to or greater than a target difference value, it is determined that the pipeline has a leakage, wherein the previous first-second potential difference comprises horizontal coordinate information smaller than the target first-second potential difference.

[0049] Here, the specific embodiments of the one-two module are the same as or similar to the specific embodiments of step S12, and thus will not be described again, but are included herein by reference.

[0050] In some embodiments, if the pipeline has a leakage, the N times of emission instructions are sent to the electric field source assembly, and the second average normalization value and the plurality of first average normalization values are determined according to the N times of received electric signals obtained by the plurality of receiving electrodes, which comprises: if the pipeline has a leakage, the N times of emission instructions are sent to the electric field source assembly, and the plurality of received electric signals are collected and obtained by the plurality of receiving electrodes; for each obtained plurality of received electric signals, the plurality of received electric signals are normalized according to the position coordinate information of the plurality of received electric signals to obtain a first normalization value corresponding to each position coordinate information, thereby obtaining N first normalization values corresponding to each position coordinate information; the N first normalization values corresponding to each position coordinate information are averaged to obtain a first average normalization value corresponding to the position coordinate information; the average value of all first average normalization values is calculated, and the average value is taken as a second average normalization value; if there is a target first average normalization value in the plurality of first average normalization values, the target first average normalization value is greater than the target multiple of the second average normalization value, and the leakage position of the pipeline is determined according to the horizontal coordinate information corresponding to the target first average normalization value.

[0051] Here, the specific embodiments of the one-three module are the same as or similar to the specific embodiments of step S13, and thus will not be described again, but are included herein by reference.

[0052] In some embodiments, for each set of received electric signals, the set of received electric signals is normalized according to the coordinate information of the set of received electric signals to obtain a plurality of first normalized values corresponding to each coordinate information, thereby obtaining N first normalized values corresponding to each coordinate information, including: for each set of received electric signals, the set of received electric signals is divided into a plurality of electric signal sets according to the coordinate information of the set of received electric signals, wherein the abscissa information of the received electric signals in each electric signal set is the same; for each electric signal set, the received electric signals in the electric signal set are normalized to obtain a first normalized value corresponding to each coordinate information in the electric signal set, thereby obtaining N first normalized values corresponding to each coordinate information.

[0053] Here, the specific embodiments of the first module are the same as or similar to the specific embodiments of step S13, and thus are not described again, but are included herein by reference.

[0054] In some embodiments, the device further comprises a fourth module (not shown) configured to filter target received electric signals according to the coordinate information of the received electric signals to remove the target received electric signals, wherein the coordinate information of the target received electric signals is in a target area, and the target area comprises a circle with the first electric field source probe as the center and a target radius as the radius, and the target radius is obtained by the following calculation method: Here, d includes the target radius, and D includes the vertical distance from the receiving electrode to the upper surface of the pipeline, Here, I(A) includes the emission current of the electric field source probe, and R(Ω) includes the grounding resistance of the emission loop.

[0055] Here, the specific embodiments of the fourth module are the same as or similar to the specific embodiments of step S14, and thus are not described again, but are included herein by reference.

[0056] In addition to the methods and devices described in the above embodiments, the present application also provides a computer readable storage medium storing computer code, when the computer code is executed, the method of any one of the preceding is executed.

[0057] The present application also provides a computer program product, when the computer program product is executed by a computer device, the method of any one of the preceding is executed.

[0058] The present application also provides a computer device, the computer device comprising:

[0059] one or more processors;

[0060] a memory for storing one or more computer programs;

[0061] When the one or more computer programs are executed by the one or more processors, the one or more processors cause performance of the activities, as contemplated by any of the preceding clauses.

[0062] Figure 6 An example system that can be used to implement various embodiments in this application is shown;

[0063] As Figure 6 shown, in some embodiments, system 300 can function as any of the devices in the various embodiments. In some embodiments, system 300 can include one or more computer-readable media (e.g., system memory or NVM / storage 320) having instructions and one or more processors (e.g., processor(s) 305) coupled with the one or more computer-readable media and configured to execute the instructions to implement modules to perform the activities in this application.

[0064] For one embodiment, system control module 310 can include any suitable interface controllers to provide for any suitable interface to at least one of the processor(s) 305 and / or any suitable device or component in communication with system control module 310.

[0065] System control module 310 can include a memory controller module 330 to provide an interface to system memory 315. Memory controller module 330 can be a hardware module, a software module, and / or a firmware module.

[0066] System memory 315 can be used to, for example, load and store data and / or instructions for system 300. For one embodiment, system memory 315 can include any suitable volatile memory, such as suitable DRAM. In some embodiments, system memory 315 can include double data rate type four synchronous dynamic random access memory (DDR4 SDRAM).

[0067] For one embodiment, system control module 310 can include one or more input / output (I / O) controller(s) to provide an interface to NVM / storage 320 and communication interface(s) 325.

[0068] For example, NVM / storage 320 can be used to store data and / or instructions. NVM / storage 320 can include any suitable non-volatile memory (e.g., flash memory) and / or can include any suitable non-volatile storage device(s) (e.g., one or more hard disk drives (HDDs), one or more compact disk (CD) drives, and / or one or more digital versatile disk (DVD) drives).

[0069] The NVM / storage device 320 can include storage resources that are physically part of the device on which the system 300 is installed or that is accessed via the communication interface(s) 325 over a network. For example, the NVM / storage device 320 can be accessed by the system 300 through the one or more communication interfaces 325.

[0070] The communication interface(s) 325 can provide an interface for the system 300 to communicate with one or more other devices and / or networks. The system 300 can communicate with one or more components of a wireless network according to any of one or more wireless network standards and / or protocols.

[0071] For one embodiment, at least one of the processor(s) 305 can be packaged together with logic of one or more controllers of the system control module 310, e.g., the memory controller module 330. For one embodiment, at least one of the processor(s) 305 can be packaged together with logic of one or more controllers of the system control module 310 to form a system in a package (SiP). For one embodiment, at least one of the processor(s) 305 can be integrated on the same die with logic of one or more controllers of the system control module 310. For one embodiment, at least one of the processor(s) 305 can be integrated on the same die with logic of one or more controllers of the system control module 310 to form a system on a chip (SoC).

[0072] In various embodiments, the system 300 can be, but is not limited to, a server, a workstation, a desktop computing device, or a mobile computing device (e.g., a laptop computing device, a handheld computing device, a tablet, a netbook, etc.). In various embodiments, the system 300 can have more or less components, and / or different architectures. For example, in some embodiments, the system 300 includes one or more cameras, a keyboard, a liquid crystal display (LCD) screen (including touch screen displays), non- volatile memory port, multiple antennas, a graphics chip, an application specific integrated circuit (ASIC), and a speaker.

[0073] It is noted that the present application can be implemented in software and / or in a combination of software and hardware, e.g., using application specific integrated circuits (ASICs), general purpose computers or any other similar hardware devices. In one embodiment, software programs implementing the present application can be executed by a processor to perform the steps or functions described herein. Similarly, software programs (including related data structures) of the present application can be stored in computer-readable media such as RAM memory, magnetic or optical drives or disks, or any other similar hardware devices. Moreover, it is expected that some of the steps or functions could be implemented in hardware, for example, as circuitry that co-operates with the processor in performing the various steps or functions.

[0074] In addition, some of the steps or functions could be implemented in hardware, for example, as circuitry that co-operates with the processor in performing the various steps or functions. Moreover, some of the steps or functions could be implemented by firmware or software, such as is the case with the present application.

[0075] Communication media includes any medium to facilitate the transfer of a computer program from one place to another. A storage medium can include one or more types of computer-readable storage media. Computer-readable storage media include, but are not limited to, volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.

[0076] By way of example, and not limitation, computer-readable storage media can include volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data. For example, computer-readable storage media includes, but is not limited to, RAM, such as SRAM, DRAM, or other types of random access memory; and non-volatile memory, such as flash memory, ROM, PROM, EPROM, EEPROM, or other memory technologies; magnetic and optical storage devices such as hard disk drives, magnetic tape, CDs, DVDs, or other magnetic and optical storage devices; and other volatile or non-volatile storage devices or mediums that store data for use by a computer system.

[0077] Herein, according to one embodiment of the present application includes a device comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the device is triggered to run the method and / or technical solutions based on the foregoing embodiments according to the present application.

[0078] It will be apparent to those skilled in the art that the present application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application.

Claims

1. A method for improving the accuracy of pipeline leakage detection using a detection device, characterized in that, The detection device, applicable to non-metallic pipes, includes a main unit and an electric field source assembly, a receiving electrode assembly, and a reference electrode, all electrically connected to the main unit. The receiving electrode assembly is positioned within the detection area of ​​the pipe, acquiring multiple received electrical signals. The reference electrode is positioned at the detection tail end of the pipe, acquiring a reference electrical signal. The method includes: Multiple first potential differences and multiple second potential differences are acquired; wherein, the potential difference includes the potential difference value between the received electrical signal and the reference electrical signal, the first potential difference is acquired before sending a transmission command to the electric field source component, and the second potential difference is acquired after sending a transmission command to the electric field source component; Multiple first-second potential differences are calculated based on the multiple first potential differences and multiple second potential differences. For each first potential difference, the corresponding second potential difference is determined based on the position coordinate information of the first potential difference, resulting in multiple sets of corresponding first and second potential differences. The position coordinate information of the first potential difference and the corresponding second potential difference are the same. For each set of corresponding first and second potential differences, the potential difference between the first and second potential differences is used as the first-second potential difference to obtain multiple first-second potential differences. These multiple first-second potential differences are used to detect whether there is leakage in the pipeline. If there is leakage in the pipeline, there is a target first-second potential difference among the multiple first-second potential differences. The difference between the target first-second potential difference and the preceding first-second potential difference is equal to or greater than the target difference. If the pipeline has a leak, N transmission commands are sent to the electric field source component. A second average normalized value and multiple first average normalized values ​​are determined based on the N received electrical signals acquired by the receiving electrode component. If the pipeline has a leak, N transmission commands are sent to the electric field source component, and multiple received electrical signals are acquired through the multiple receiving electrodes. For each acquired received electrical signal, the multiple received electrical signals are normalized based on their position coordinate information to obtain the first normalized value corresponding to each position coordinate, thereby obtaining each... The location coordinate information corresponds to N first normalized values; for each location coordinate information, the average of the N first normalized values ​​is calculated to obtain the first average normalized value corresponding to that location coordinate information; the average of all first average normalized values ​​is calculated, and this average is used as the second average normalized value; if there is a target first average normalized value among the multiple first average normalized values, and the target first average normalized value is greater than the second average normalized value by a multiple of the target, the leakage location of the pipeline is determined according to the horizontal coordinate information corresponding to the target first average normalized value, where N is a positive integer.

2. The method according to claim 1, characterized in that, The electric field source assembly includes a first electric field source probe and a second electric field source probe, wherein the first electric field source probe is disposed inside the liquid in the pipe, and the second electric field source probe is disposed outside the pipe. Acquiring multiple first potential differences and multiple second potential differences includes: Before sending a transmission command to the electric field source component, multiple first potential differences are obtained through the reference electrode and the multiple receiving electrodes; A transmission command is sent to the electric field source component, and multiple second potential differences are obtained through the reference electrode and the plurality of receiving electrodes.

3. The method according to claim 2, characterized in that, Before sending the transmission command to the electric field source probe, multiple first potential differences are obtained through the reference electrode and the multiple receiving electrodes; Sending a transmission command to the electric field source probe, and acquiring multiple second potential differences through the reference electrode and the plurality of receiving electrodes, including: Before sending a transmission command to the electric field source component, a plurality of first received electrical signals are acquired through the plurality of receiving electrodes, and a first reference electrical signal is acquired through the reference electrode; For each first received electrical signal, calculate the potential difference between the first received electrical signal and the first reference electrical signal, and use the potential difference as the first potential difference to obtain multiple first potential differences; A transmission command is sent to the electric field source component, and an electric signal is transmitted through the first electric field source probe and the second electric field source probe to form an electric field. Multiple second received electric signals are acquired through the multiple receiving electrodes, and multiple second reference electric signals are acquired through the reference electrode. For each second received electrical signal, the potential difference between the second received electrical signal and the second reference electrical signal is calculated, and the potential difference is used as the second potential difference to obtain multiple second potential differences.

4. The method according to claim 1, characterized in that, The step of detecting whether the pipeline has leakage based on the plurality of first and second potential differences includes: The multiple first and second potential differences are divided into multiple potential difference sets based on the position coordinate information of each first and second potential difference. Each potential difference set includes multiple first and second potential differences arranged in sequence, and the ordinate information of multiple first and second potential differences in the same potential difference set is the same. For each set of potential differences, if there is a target first and second potential difference in the set of potential differences, and the difference between the target first and second potential difference and the preceding first and second potential difference is equal to or greater than the target difference, it is determined that there is a leak in the pipeline. The preceding first and second potential difference includes the information that the abscissa of the preceding first and second potential difference is less than the target first and second potential difference.

5. The method according to claim 1, characterized in that, For each acquired multiple received electrical signals, the multiple received electrical signals are normalized according to their position coordinate information to obtain multiple first normalized values ​​corresponding to each position coordinate information, thereby obtaining N first normalized values ​​corresponding to each position coordinate information, including: For each acquisition of multiple received electrical signals, the multiple received electrical signals are divided into multiple electrical signal sets according to the position coordinate information of the multiple received electrical signals, wherein the horizontal coordinate information of the multiple received electrical signals in each electrical signal set is the same; For each set of electrical signals, the multiple received electrical signals in the set are normalized to obtain the first normalized value corresponding to each position coordinate information in the set, thereby obtaining N first normalized values ​​corresponding to each position coordinate information.

6. The method according to claim 2, characterized in that, The method further includes, before determining the second average normalized value and multiple first average normalized values ​​based on the received electrical signals acquired N times by the plurality of receiving electrodes: Target received electrical signals are filtered based on the coordinate information of the received electrical signals to eliminate them. The position coordinates of the target received electrical signals are within a target area, which includes a circle centered on the first electric field source probe and with a target radius as its radius. The target radius is obtained through the following calculation method: Here, d includes the target radius, and D includes the vertical distance from the receiving electrode to the upper surface of the pipe. Here, I (A) includes the emission current of the electric field source probe, and R (Ω) includes the grounding resistance of the emission circuit.

7. A computer device for improving the accuracy of pipeline leakage detection through a detection apparatus, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method as described in any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method as described in any one of claims 1 to 6.

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