Method and equipment for improving leakage detection precision of pipeline through detection device

Abstract

The invention relates to the technical field of geotechnical engineering detection and testing. In particular to a method and equipment for improving 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: acquiring a plurality of first potential differences and a plurality of second potential differences; according to the first potential difference and the second potential difference, a first two-potential difference is obtained through calculation, and the first two-potential difference is used for detecting whether leakage exists in the pipeline or not; if leakage exists in the pipeline, N times of emission instructions are sent to the electric field source assembly, a second average normalization value and a first average normalization value are determined according to received electric signals obtained in the N times, and if a target first average normalization value exists, the target first average normalization value is larger than the second average normalization value of the target multiple, and if the target first average normalization value is larger than the second average normalization value of the target multiple, the second average normalization value is not larger than the second average normalization value of the target multiple. And determining the leakage position of the pipeline according to the abscissa information corresponding to the target first average normalized value. According to the scheme, the leakage detection precision is greatly improved.

Description

Technical Field

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

[0002] Drainage pipes are important infrastructure to maintain the normal operation of cities, and they undertake tasks such as collecting, transporting and treating urban rainwater and sewage. According to statistics, the length of urban drainage pipes in China exceeded 870,000 kilometers in 2021. And the length of urban drainage pipes has maintained a high-speed growth trend. At the same time, with the increase in the use time of drainage pipes and the occurrence of geological activities, incidents of pipeline rupture and leakage occur from time to time. The leakage of drainage pipes is divided into external infiltration and internal infiltration. External infiltration will seriously pollute groundwater and affect the health and safety of residents; internal infiltration will increase the cost of sewage treatment plants and reduce treatment efficiency. In addition, pipeline leakage will affect the soil around the pipeline, causing soil erosion, leading to the formation of underground disease bodies and possibly causing road collapse, threatening people’s lives and property. Therefore, timely detection of drainage pipe leakage and accurate detection of the location of drainage pipe leakage points play an important role in the normal and safe operation of the city.

[0003] However, in the existing technology, there are still many difficulties in locating the leakage points of drainage pipes in complex urban environments. For example, infrared thermal imaging methods are easily affected by ambient temperature and groundwater; CCTV (Closed-Circuit Television) and other video equipment methods and sonar methods mostly require pipe cleaning in advance, and have certain requirements for detecting the operating water level. The mainstream drainage pipe material today is non-metallic. The physical properties of non-metallic materials are not significantly different from those of the surrounding terrain. Therefore, when traditional geophysical methods such as ground penetrating radar are used, the detection depth, resolution and positioning accuracy are limited. Therefore, it is necessary to improve the detection and positioning capabilities of drainage pipe leakage points in complex urban environments. Summary of the invention

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

[0005] According to one aspect of the present application, a method for improving the leakage detection accuracy of a pipeline by a detection device is provided, which is applied to a non-metallic pipeline. The detection device includes a host and an electric field source component, a receiving electrode component and a reference electrode electrically connected to the host respectively; wherein the receiving electrode component is arranged in the detection area of ​​the pipeline, and a plurality of received electrical signals are obtained through the receiving electrode component; the reference electrode is arranged at the detection tail end of the pipeline, and a reference electrical signal is obtained through the reference electrode; the method includes: Acquire multiple first potential differences and multiple second potential differences; wherein the potential difference includes a potential difference value between a received electrical signal and a reference electrical signal, the first potential difference is acquired before sending a transmit instruction to the electric field source component, and the second potential difference is acquired after sending a transmit instruction to the electric field source component; A plurality of first and 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 and second potential differences are used to detect whether there is leakage in the pipeline, and if there is leakage in the pipeline, there is a target first and second potential difference among the plurality of first and second potential differences, and the difference between the target first and second potential difference and the first and second potential difference before the target first and second potential difference is equal to or greater than the target difference; If there is a leakage in the pipeline, N transmission instructions are sent to the electric field source component, and the second average normalized value and multiple first average normalized values ​​are determined based on the received electrical signals obtained by the receiving electrode component N times. 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 of the target multiple, the leakage position of the pipeline is determined based on the horizontal coordinate information corresponding to the target first average normalized value, and N is a positive integer.

[0006] According to one aspect of the present application, a computer device for improving the accuracy of pipeline leakage detection through a detection device is provided, comprising: Processor; and A memory arranged to store computer executable instructions which, when executed, cause a processor to perform the operations of any of the methods described above.

[0007] According to one aspect of the present application, a computer-readable medium storing instructions is provided, and when the instructions are executed, the system performs the operation of any of the above methods.

[0008] Compared with the prior art, the detection device of the present application obtains multiple first potential differences when no electric signal is emitted and multiple second potential differences when electric signal is emitted by sending two emission instructions to the electric field source component, first obtains multiple first and second potential differences based on multiple first potential differences and multiple second potential differences; then detects whether there is leakage in the pipeline based on multiple first and second potential differences, and obtains the first and second potential differences obtained by emitting electric signals and not emitting electric signals, which can greatly reduce the influence of ground potential distribution on measurement results. When determining whether there is leakage in the pipeline, in order to reduce the display of false values, by sending N emission instructions to the electric field source component, a second average normalized value and multiple first average normalized values ​​are obtained, and the specific leakage position of the pipeline is determined based on the position coordinate information of the second average normalized value, multiple first average normalized values ​​and the first average normalized value. In summary, this scheme first obtains the first potential difference and the second potential difference through two measurements, and first detects whether there is leakage in the pipeline based on the first potential difference and the second potential difference. After determining that there is leakage in the pipeline, the received electrical signal obtained by transmitting the electrical signal N times is normalized, and the specific leakage position of the pipeline is determined in combination with the position coordinate information of the normalized value, thereby reducing the influence of the ground potential distribution on the measurement results, and further reducing the display of false values ​​during the measurement process, thereby greatly improving the accuracy of the leakage position determination. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 A flow chart showing a method for improving the accuracy of pipeline leakage detection by using a detection device according to an embodiment of the present application; Figure 2 A schematic diagram showing a detection device according to an embodiment of the present application; Figure 3 A schematic diagram showing a detection device according to another embodiment of the present application; Figure 4 A schematic diagram showing a detection device according to another embodiment of the present application; Figure 5 A schematic diagram of the structure of an apparatus for improving the leakage detection accuracy of a pipeline by using a detection device according to an embodiment of the present application is shown; Figure 6 An exemplary system is shown that can be used to implement various embodiments in the present application.

[0010] Explanation of the reference numerals: 1. host; 2. first electric field source probe; 3. receiving electrode assembly; 4. reference electrode; 5. pipeline; 6. liquid; 7. inspection port. DETAILED DESCRIPTION

[0011] The present application is described in further detail below in conjunction with the accompanying drawings.

[0012] In a typical configuration of the present application, the terminal, the device of the service network and the trusted party all include one or more processors (eg, a central processing unit (CPU)), an input / output interface, a network interface and a memory.

[0013] Memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash memory. Memory is an example of a computer-readable medium.

[0014] Computer readable media include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. 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 technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0015] The devices referred to in this application include but are not limited to terminals, network devices, or devices formed by integrating terminals and network devices through a network. Terminals include but are not limited to any mobile electronic product that can interact with users (for example, interacting with users through a touchpad), such as smart phones, tablet computers, etc. Mobile electronic products can use any operating system, such as Android operating system, iOS operating system, etc. Among them, network devices include an electronic device that can automatically perform numerical calculations and information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field Programmable Gate Array, FPGA), digital signal processors (Digital Signal Processor, DSP), embedded devices, etc. Network devices include but are not limited to computers, network hosts, single network servers, multiple network server sets or multiple servers. Clouds are composed of a large number of computers or network servers based on cloud computing (Cloud Computing), where cloud computing is a type of distributed computing, a virtual supercomputer composed of a group of loosely coupled computer sets. The network includes but is not limited to the Internet, wide area network, metropolitan area network, local area network, VPN network, wireless self-organizing network (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 network device and a touch terminal through a network.

[0016] Of course, those skilled in the art should understand that the above-mentioned devices are only examples, and other existing or future devices that are applicable to the present application should also be included in the scope of protection of the present application and are included here by reference.

[0017] In the description of the present application, “plurality” means two or more, unless otherwise clearly and specifically defined.

[0018] Figure 1 A method for improving the leakage detection accuracy of a pipeline 5 by using a detection device according to an embodiment of the present application is shown, which is applied to a non-metallic pipeline 5. Figure 2 , Figure 3 , Figure 4As shown, the detection device includes a host with reference numerals: 1 and an electric field source component, a receiving electrode component 3 and a reference electrode 4 electrically connected to the host with reference numerals: 1; wherein the receiving electrode component 3 is arranged in the detection area of ​​the pipeline 5, and a plurality of received electrical signals are obtained through the receiving electrode component 3; the reference electrode 4 is arranged at the detection tail end of the pipeline 5, and a reference electrical signal is obtained through the reference electrode 4; the method includes steps S11, S12 and S13, in which a plurality of first potential differences and a plurality of second potential differences are obtained in step S11; wherein the potential difference includes a potential difference value between the received electrical signal and the reference electrical signal, the first potential difference is obtained before sending a transmission instruction to the electric field source component, and the second potential difference is obtained after sending a transmission instruction to the electric field source component; in step S12, according to the plurality of first potential differences and the plurality of second potential differences, The potential difference is calculated to obtain a plurality of first and second potential differences, wherein the plurality of first and second potential differences are used to detect whether there is leakage in the pipeline 5. If there is leakage in the pipeline 5, 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 first and second potential difference before the target first and second potential difference is equal to or greater than the target difference; in step S13, if there is leakage in the pipeline 5, N transmission instructions are sent to the electric field source component, and the second average normalized value and the plurality of first average normalized values ​​are determined according to the received electrical signals obtained by the receiving electrode component 3N times. If there is a target first average normalized value in the plurality of first average normalized values, and the target first average normalized value is greater than the second average normalized value of the target multiple, the horizontal coordinate information corresponding to the target first average normalized value is determined as the leakage position of the pipeline 5, and N is a positive integer. In some embodiments, the fullness of the non-metallic pipeline 5 is above 0.2. In some embodiments, the electric field source component includes a first electric field source probe 2 and a second electric field source probe (not shown), and the first electric field source probe 2 and the second electric field source probe include a dipole source, and the electric signal is transmitted through the first electric field source probe 2 and the second electric field source probe to form an electric field. For the specific description of the electric field source component, please refer to the corresponding embodiment below, which will not be repeated here. The receiving electrode assembly 3 includes a plurality of receiving electrodes arranged in an array, and the received electric signal is collected and acquired through the receiving electrode assembly 3. In some embodiments, the receiving electrode assembly 3 is arranged in the detection area of ​​the pipeline 5 (for example, directly above or near the pipe section to be measured, ensuring that the receiving electrodes are continuously arranged in the direction parallel to the direction of the pipe section to be measured). In some embodiments, the vertical distance D from the receiving electrode to the upper surface of the pipeline 5 is ≤ (100×I (A)) / (R (Ω)), where I (A) includes the transmitting current of the electric field source probe, and R (Ω) includes the ground resistance of the transmitting loop. In some embodiments, R (Ω) can be measured when no electric signal is transmitted, or it can be calculated by transmitting voltage / transmitting current when transmitting electric signal. In some embodiments, such as Figure 2-4As shown, the reference electrode 4 is disposed 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 one 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 electrode 4 can collect and obtain the reference electric signal. In this embodiment, an electric field is formed by the electric field source assembly, a plurality of received electric signals in the electric field are collected and obtained by the receiving electrode assembly 3, and a stable reference electric signal is collected and obtained by the reference electrode 4.

[0019] Specifically, in step S11, a plurality of first potential differences and a plurality of second potential differences are acquired; wherein the potential difference includes a potential difference value between a received electrical signal and a reference electrical signal, the first potential difference is acquired before a transmission instruction is sent to the electric field source component, and the second potential difference is acquired after a transmission instruction is sent to the electric field source component. For example, when the electric field source component is not transmitting, a plurality of first potential differences are acquired through the receiving electrode component and the reference electrode, and after the electric field source component transmits, a plurality of second potential differences are acquired through the receiving electrode component and the reference electrode. Specifically, for example, when the electric field source component is not transmitting, 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 a first potential difference (for example, , , … ). Then, when the electric field source assembly transmits an 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 a second potential difference (for example, , , … ). In this embodiment, the first potential difference and the second potential difference are obtained when the electric field source component is transmitting and not transmitting, thereby reducing the influence of the ground potential distribution. The first potential difference and the second potential difference are used to determine whether there is leakage in the pipeline.

[0020] In step S12, a plurality of first and second potential differences are calculated based on a plurality of first potential differences and a plurality of second potential differences, wherein the plurality of first and 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 and second potential difference among the plurality of first and second potential differences, and the difference between the target first and second potential difference and the first and second potential difference before the target first and second potential difference is equal to or greater than the target difference. For example, each first potential difference has a corresponding second potential difference. In other words, there is a one-to-one correspondence between the plurality of first potential differences and the plurality of second potential differences. The first and second potential differences include the difference between the first potential difference and the second potential difference corresponding to the first potential difference. For example, the plurality of first and second potential differences include , here, Including the first and second potential differences, comprising a first potential difference, Including a second potential difference corresponding to the first potential difference. In some embodiments, the first and second potential differences are obtained based on the first potential difference and the second potential difference, the first potential difference and the second potential difference are obtained based on the received electrical signal collected by the receiving electrode, 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 receiving electrodes, and the distance between the receiving electrodes arranged in an array and the transmitting source of the electric field source component is from near to far, and the receiving electrodes corresponding to the first and second potential differences include the receiving electrodes located before the receiving electrodes corresponding to the target first and second potential differences. In some embodiments, if there is no leakage in the pipeline, the multiple first and second potential differences are monotonically decreasing away from the electric field source component. Therefore, when there is leakage in the pipeline, there will be 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 (for example, it is not monotonically decreasing, but there is a sudden change in the first and second potential difference). In this embodiment, the specific leakage position of the pipeline is detected based on multiple first and second potential differences, which greatly improves the leakage detection accuracy.

[0021] In step S13, if there is leakage in the pipeline, N transmission instructions are sent to the electric field source component, and the second average normalized value and multiple first average normalized values ​​are determined according to the received electrical signals obtained by the receiving electrode component N times. 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 of the target multiple, 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 there is leakage in the pipeline is first detected based on multiple first potential differences and multiple second potential differences, and then 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 determining that there is leakage in the pipeline, N transmission instructions are sent to the electric field source component, and the second average normalized value and multiple first average normalized values ​​are calculated according to the received electrical signals obtained N times, and the specific leakage position of the pipeline is determined based on the second average normalized value and the multiple first average normalized values. In some embodiments, the first normalized value is obtained by normalizing each received electrical signal, the first average normalized value is obtained by averaging multiple first normalized values ​​of the same position coordinate information, and the second average normalized value is obtained by averaging multiple first average normalized values. For the specific description of the first average normalized value and the second average normalized value, please refer to the following corresponding embodiments, which will not be repeated here. In some embodiments, each first averaged value corresponds to position coordinate information. If there is a target first average normalized value, and the target first average normalized value is greater than the second average normalized value of the target multiple (for example, 1.1 times), 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 pipe section to be measured is used as the coordinate origin, the position a distance away from the starting point of the pipe section to be measured is the leakage position. For another example, if the coordinate axis is established with the first electric field source probe as the coordinate origin, the position a distance away 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 may be specifically used as the coordinate origin.

[0022] In some embodiments, the electric field source component 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 component, a plurality of first potential differences are obtained through the reference electrode 4 and a plurality of receiving electrodes; a transmission instruction is sent to the electric field source component, and a plurality of second potential differences are obtained through the reference electrode 4 and a 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 dipole sources. In some embodiments, there is a certain flow of liquid 6 (for example, water) in the pipeline 5 to support the formation of the electric field, and the first electric field source probe 2 is arranged inside the liquid 6 in the pipeline 5 (for example, at 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 is 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-shaped electrical emission source (a well-conducting metal block, such as Figure 2 as shown) or a linear electrical emission source (a good conductor metal body, such as Figure 4 As shown in FIG. 1 ), there are certain differences in the arrangement of the receiving electrode assembly 3 corresponding to the point-shaped electrical emission source and the linear electrical emission source. Specifically, refer to FIG. Figure 2 When the first electric field source probe 2 is a point-shaped electrical emission source, the point-shaped electrical emission source is placed into the water-filled part of the drain pipe (e.g., pipe 5) through the inspection port. In some embodiments, the receiving electrode and the reference electrode include but are not limited to non-polarized electrodes. Figure 3 , a single or multiple measuring lines (it is recommended to use an odd number of measuring lines) are arranged directly above the drain pipe along the direction of the pipe 5, and multiple receiving electrodes (for example, non-polarized electrodes) are arranged on each measuring line. In some embodiments, the first electric field source probe 2 can be moved according to the on-site situation, and multiple measurements (such as Figure 2 However, the moving range of the first electric field source probe 2 is usually no more than three times the length of the observation electrode measurement line (for example, the length of the receiving electrode assembly 3 along the direction of the pipeline 5), and the measurement line layout range is no more than 1 / 6 of the moving range of the first electric field source probe 2 (as shown in FIG2 ). Figure 4When the first electric field source probe 2 is a linear electrical emission source, the linear electrical emission source is placed into the water part of the drain pipe through the inspection port, and the length extends to another inspection port. A single measuring line or multiple measuring lines (an odd number of measuring lines is recommended) are arranged directly above the drain pipe along the direction of the pipeline 5. Non-polarized electrodes (for example, receiving electrodes) are arranged on the measuring lines. The spacing between the electrodes (for example, receiving electrodes) is less than 1 / 2 of the target resolution, and the potential value at this location is measured (for example, receiving electrical signals). The length of the measuring line arrangement is 1 / 3 of the length of the emission source, and is located directly above the middle of the emission source (as shown in Figure 3). Similar to the point-shaped electrical 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 abnormal fixation of the non-metallic pipeline 5, the first electric field source probe 2 is set inside the liquid 6 in the pipeline 5. The electric field formed by emitting the electric signal from the inside of 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. Furthermore, in this embodiment, in order to reduce the influence of the ground electric signal, first, when the electric field source component is not transmitting, the potential difference between each receiving electrode of the receiving electrode component 3 and the reference electrode 4 is measured, and the measured potential difference value is a first potential difference (for example, , , … ) (For example, under the influence of the urban background electric signal, when the electric field source component does not transmit the electric signal and forms the electric field of the electric field source component, the receiving electrode and the reference electrode can also collect the electric signal). Then, when the electric field source component transmits the electric signal, the potential difference between each receiving electrode of the receiving electrode component and the reference electrode is measured, and the measured potential difference value is the second potential difference (for example, , , … ). In this embodiment, a first potential difference and a second potential difference are obtained when the electric field source component emits and does not emit, and the first potential difference and the second potential difference are used to determine whether there is leakage in the pipeline.

[0023] In some embodiments, before sending a transmit instruction to the electric field source probe, multiple first potential differences are acquired through a reference electrode and multiple receiving electrodes; sending a transmit instruction to the electric field source probe, and acquiring multiple second potential differences through the reference electrode and multiple receiving electrodes, including: before sending a transmit instruction to the electric field source component, acquiring multiple first received electrical signals through multiple receiving electrodes, and acquiring a first reference electrical signal through the reference electrode; for each first received electrical signal, calculating the potential difference between the first received electrical signal and the first reference electrical signal, and using the potential difference as the first potential difference to acquire multiple first potential differences; sending a transmit instruction to the electric field source component, emitting an electrical signal through the electric field source component to form an electric field, acquiring multiple second received electrical signals through multiple receiving electrodes, and acquiring multiple second reference electrical signals through the reference electrode; for each second received electrical signal, calculating the potential difference between the second received electrical signal and the second reference electrical signal, and using the potential difference as the second potential difference to acquire multiple second potential differences. For example, before sending a transmission instruction to the electric field source component, a plurality of first received electrical signals are acquired through a plurality of receiving electrodes of the receiving electrode component, a first reference electrical signal is acquired through a reference electrode, and each first received electrical signal is subtracted from the first reference electrical signal to obtain a plurality of first potential differences (for example, , , … ). Then, a transmission instruction is sent to the electric field source component, and multiple second received electrical signals are acquired through multiple receiving electrodes of the receiving electrode component, and a second reference electrical signal is acquired through the reference electrode. Each second received electrical signal is subtracted from the second reference electrical signal to obtain multiple second potential differences (for example, , , … ). In this embodiment, not only the second potential difference of the electric field source probe emitting the electric signal is measured, but also the first potential difference of the electric field source probe when no electric signal is generated is measured, thereby reducing the influence of the ground potential distribution.

[0024] In some embodiments, multiple first and second potential differences are calculated based on multiple first potential differences and multiple second potential differences, including: for each first potential difference, according to the position coordinate information of the first potential difference, determine the second potential difference corresponding to the first potential difference, and obtain multiple groups of corresponding first potential differences and second potential differences, wherein the first potential difference and the second potential difference corresponding to the first potential difference have the same position coordinate information; for each group of corresponding first potential differences and second potential differences, use the potential difference between the first potential difference and the second potential difference as the first and second potential differences to obtain multiple first and second potential differences; detect whether there is leakage in the pipeline according to the multiple first and second potential differences, wherein if there is leakage in the pipeline, there is a target first and second potential difference in the multiple 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 the target difference. For example, the coordinates can be established with the projection of the starting point of the pipe section to be tested to the ground position O as the origin coordinate, the direction parallel to the pipeline as the X-axis, the direction of the pipe section detection end point as the positive direction of the X-axis, the direction perpendicular to the pipeline direction as the Y-axis, and the direction of the second electric field source probe as the positive direction of the Y-axis. Each receiving electrode corresponds to position coordinate information. Of course, those skilled in the art will appreciate that the above coordinate establishment method is only an example, and other existing or future coordinate establishment methods, if applicable to the present application, are also within the scope of protection of the present application and are included herein by reference. In some embodiments, the position coordinate information includes abscissa information and ordinate information. In some embodiments, the first potential difference is calculated based on the first received electrical signal, and therefore, the position coordinate information of the receiving electrode corresponding to the first received electrical signal is the position coordinate information of the corresponding first potential difference. For example, each first received electrical signal corresponds to the position coordinate information of the receiving electrode that collects and obtains the first received electrical signal, and the position coordinate information of the first potential difference obtained based on the first received electrical signal is the position coordinate information of the first received electrical signal. Similarly, the second potential difference is also obtained based on the second received electrical signal, and therefore, the position coordinate information of the second potential difference obtained based on the second received electrical signal is the position coordinate information of the second received electrical signal. The first potential difference is obtained when the electric field source probe is not transmitting, and the second potential difference is obtained when the electric field source probe is transmitting, and therefore, there is a first potential difference and a second potential difference with the same position coordinate information. When calculating multiple first and 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, and obtain multiple groups of corresponding first potential differences and second potential differences; further, for each group of corresponding first potential differences and second potential differences, the potential difference between the first potential difference and the second potential difference is used as the first and second potential difference to obtain multiple first and second potential differences. In other words, the first potential difference and the second potential difference of the same group are obtained based on the same receiving electrode.Further, whether there is leakage in the pipeline is detected based on the multiple first and second potential differences. If there is leakage in the pipeline, there is a target first and second potential difference among the multiple first and second potential differences, and the difference between the target first and second potential difference and the previous first and second potential difference before the target first and second potential difference is equal to or greater than the target difference. In some embodiments, the receiving electrode corresponding to the previous first and second potential difference includes a receiving electrode before the receiving electrode corresponding to the target first and second potential difference. In this embodiment, the previous first and second potential difference can be understood as including the previous first and second potential difference having the same ordinate as the target first and second potential difference and a horizontal coordinate before the target first and second potential difference.

[0025] In some embodiments, detecting whether there is leakage in a pipeline based on multiple first and second potential differences includes: dividing the multiple first and second potential differences into multiple potential difference sets based on 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 order, and the ordinate information of 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, 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, and it is determined that there is leakage in the pipeline, wherein the previous first and second potential difference includes that the horizontal coordinate information of the previous first and second potential difference is less than the target first and second potential difference. For example, based on the position coordinate information of the multiple first and second potential differences, the multiple first and second potential differences with the same vertical coordinate information are divided into a potential difference set. In some embodiments, the multiple first and second potential differences in each potential difference set are arranged from small to large according to the horizontal coordinate 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, , , , , In other embodiments, the multiple first and second potential differences in each potential difference set are centered on the first and second potential differences closest to the coordinate origin, and the multiple first and second potential differences on both sides of the coordinate origin are arranged from small to large (for example, when the first electric field source probe is used as the coordinate origin). For example, the potential difference set [ , , , , ],in, The position coordinate information is closest to the coordinate origin (for example, based on the horizontal coordinate information, determine The position coordinate information is closest to the coordinate origin). , The horizontal coordinate information increases successively, , The horizontal coordinate information of the first and second potential differences increases successively. In this embodiment, it is possible to detect whether there is leakage in the pipeline based on the position coordinate information of the first and second potential differences. For example, for each potential difference set, if there is a target first and second potential difference in the potential difference set, 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, and it is determined that there is leakage in the pipeline, wherein the previous first and second potential difference includes that the horizontal coordinate information of the previous first and second potential difference is less than the target first and second potential difference. For example, in the potential difference set [ , , , , ]middle, , , , , The horizontal axis information is arranged from small to large. If there is no leakage in the pipeline, the farther away from the first electric field source probe, , , , , It should be strictly monotonically decreasing; if , , , , There is a target first and second potential difference ,Should The potential difference between the first and second If the difference between is equal to or greater than the target difference, it is determined that there is leakage in the pipeline. For another example, in the potential difference set [ , , , , ], with As the center, , The horizontal coordinate information increases successively, , The horizontal axis information increases successively. If there is no leakage in the pipeline, the farther away from the first electric field source probe, , It should be strictly monotonically decreasing. , It should be strictly monotonically decreasing; if there is a target first and second potential difference ,Should The potential difference between the first and second If the difference between the two is equal to or greater than the target difference, it is determined that there is leakage in the pipeline.

[0026] In some embodiments, if there is a leakage in the pipeline, N transmission instructions are sent to the electric field source component, and a second average normalized value and multiple first average normalized values ​​are determined based on the received electrical signals acquired N times by multiple receiving electrodes, including: if there is a leakage in the pipeline, N transmission instructions are sent to the electric field source component, and multiple received electrical signals are acquired through multiple receiving electrodes; for the multiple received electrical signals acquired each time, the multiple received electrical signals are normalized according to the position coordinate information of the multiple received electrical signals to obtain the first normalized value corresponding to each position coordinate information, thereby obtaining N first normalized values ​​corresponding to each position coordinate information; the average value of the N first normalized values ​​corresponding to each position coordinate information is calculated to obtain the first average normalized value corresponding to the position coordinate information; the average value of all first average normalized values ​​is calculated, and the average value 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 of the target multiple, the horizontal coordinate information corresponding to the target first average normalized value is determined as the leakage position of the pipeline. In some embodiments, if it is determined that there is leakage in the pipeline, N transmission instructions are sent to the electric field source component of the electric field source component, and multiple received electrical signals obtained by the receiving electrode component each time are recorded. In some embodiments, the received electrical signals corresponding to each position coordinate information of the same horizontal coordinate information are first normalized to obtain a first normalized value corresponding to each position coordinate information corresponding to the horizontal coordinate information (for example, , where i includes the horizontal coordinate information, j includes the vertical coordinate information, and k includes the kth transmission); then the N first normalized values ​​corresponding to each position coordinate information are averaged to obtain the first average normalized value corresponding to the position coordinate information (for example, ). The above normalization processing is performed on the received electrical signal corresponding to each position coordinate information to obtain the first average normalized value corresponding to each position coordinate information, that is, multiple first average normalized values ​​are obtained. Then, the multiple first average normalized values ​​are averaged to obtain a second average normalized value (for example, ). If there is a target first average normalized value among the multiple first average normalized values ​​(for example, ), the target first average normalized value is greater than the target second average normalized value by multiples (e.g., , for example, the target multiple is 1.1), then the first average normalized value according to the target (for example, ) corresponding to the horizontal coordinate information (such as a) to determine the leakage position of the pipeline (for example, the leakage position is a meter away from the coordinate origin (such as the starting point of the pipe section to be measured or the first electric field source probe)).

[0027] In some embodiments, for the multiple received electrical signals acquired each time, the multiple received electrical signals are normalized according to the position coordinate information of the multiple received electrical signals to obtain multiple first normalized values ​​corresponding to each position coordinate information, thereby obtaining N first normalized values ​​corresponding to each position coordinate system information, including: for the multiple received electrical signals acquired each time, 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 electrical signal set, the multiple received electrical signals in the electrical signal set are normalized to obtain the first normalized values ​​corresponding to multiple different horizontal coordinate information. For example, the received electrical signals with the same horizontal coordinate information are divided into the same electrical signal set, and then the multiple received electrical signals in each electrical signal set are normalized. In some embodiments, normalizing the plurality of received electrical signals comprises: {v}_{ijk}=\frac {{u}_{ijk}} {min[{u}_{i1k},{u}_{i2k},{u}_{i3k}...{u}_{iMk}]} , where k includes the number of transmissions, for example, the kth transmission; i includes the horizontal coordinate information; j includes the vertical coordinate information; Including the measurement results of the received electrical signal at (i, j) during the kth transmission The normalized result of (e.g., the first normalized value); Includes the measurement results of the received electrical signal at (i, j) during the kth transmission; min[{u}_{i1k},{u}_{i2k},{u}_{i3k}...{u}_{iMk}] Including the minimum value of the received electrical signal with the same horizontal coordinate information i. In this embodiment, for the multiple received electrical signals obtained each time, data division is first performed to divide the received electrical signals with the same horizontal coordinate information into the same electrical signal set. Then, the above-mentioned normalization processing is performed on the received electrical signals in each electrical signal set to obtain multiple first normalized values ​​corresponding to each horizontal coordinate information.

[0028] In some embodiments, the method determines the second average normalized value and the multiple first average normalized values ​​according to the received electrical signals acquired N times by the multiple receiving electrodes, and also includes step S14 (not shown). In step S14, the target received electrical signals are screened according to the coordinate information of the received electrical signals to eliminate the target received electrical signals, wherein the position coordinate information of the target received electrical signals is within the target area, and the target area includes a circle with the first electric field source probe as the center and the target radius as the radius, and the target radius is obtained by the following calculation method: , where d includes the target radius, D includes the vertical distance from the receiving electrode to the upper surface of the pipe, , here, I (A) includes the transmitting current of the electric field source probe, and R (Ω) includes the ground resistance of the transmitting loop. In some embodiments, it is also necessary to eliminate data that may be affected by the near-field effect (for example, the target received electrical signal). In some embodiments, a circle of the target area is determined with the position coordinate information of the first electric field source probe as the center and the target radius d as the radius. The received electrical signal corresponding to the position coordinate information covered by the target area is determined as the target received electrical signal. In some embodiments, eliminating the target received electrical signal includes: the target received electrical signal does not participate in the determination process of the specific leakage position, in other words, the target received electrical signal does not participate in the normalization processing step of the received electrical signal.

[0029] Figure 5A schematic structural diagram of a detection device according to an embodiment of the present application is shown, which is applied to non-metallic pipelines. The detection device includes a host and an electric field source component, a receiving electrode component and a reference electrode electrically connected to the host respectively; wherein the receiving electrode component is arranged in the detection area of ​​the pipeline, and multiple received electrical signals are obtained through the receiving electrode component; the reference electrode is arranged at the detection tail end of the pipeline, and the reference electrical signal is obtained through the reference electrode; it also includes a one-module, a one-two module, and a one-three module, and the one-one module is used to obtain multiple first potential differences and multiple second potential differences; wherein the potential difference includes the potential difference value between the received electrical signal and the reference electrical signal, the first potential difference is obtained before sending a transmission instruction to the electric field source component, and the second potential difference is obtained after sending a transmission instruction to the electric field source component; the one-two module is used to obtain multiple first potential differences and multiple second potential differences according to the multiple first potential differences and multiple A plurality of first and second potential differences are calculated from a plurality of second potential differences, wherein the plurality of first and 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 and second potential difference among 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 before the target first and second potential difference is equal to or greater than the target difference. The one-three modules are used to send N transmission instructions to the electric field source component if there is leakage in the pipeline, determine the second average normalized value and the plurality of first average normalized values ​​according to the received electrical signals obtained N times by the receiving electrode component, if there is a target first average normalized value among the plurality of first average normalized values, the target first average normalized value is greater than the second average normalized value of the target multiple, and determine the leakage position of the pipeline according to the horizontal coordinate information corresponding to the target first average normalized value, and N is a positive integer.

[0030] Here, the specific implementations corresponding to module 11, module 12, and module 13 are the same as or similar to the specific implementations of step S11, step S12, and step S13, and are therefore not repeated here and are included herein by reference.

[0031] In some embodiments, the electric field source component includes a first electric field source probe and a second electric field source probe, wherein the first electric field source probe is arranged inside the liquid in the pipeline, and the second electric field source probe is arranged outside the pipeline, to obtain multiple first potential differences and multiple second potential differences, including: before sending a transmission instruction to the electric field source component, obtaining multiple first potential differences through a reference electrode and multiple receiving electrodes; sending a transmission instruction to the electric field source component, and obtaining multiple second potential differences through the reference electrode and multiple receiving electrodes.

[0032] Here, the specific implementation methods corresponding to each module are the same as or similar to the specific implementation example of step S11, and thus will not be described in detail and are included herein by reference.

[0033] In some embodiments, before sending a transmit instruction to the electric field source probe, multiple first potential differences are acquired through a reference electrode and multiple receiving electrodes; sending a transmit instruction to the electric field source probe, and acquiring multiple second potential differences through the reference electrode and multiple receiving electrodes, including: before sending a transmit instruction to the electric field source component, acquiring multiple first received electrical signals through multiple receiving electrodes, and acquiring a first reference electrical signal through the reference electrode; for each first received electrical signal, calculating the potential difference between the first received electrical signal and the first reference electrical signal, and using the potential difference as the first potential difference to acquire multiple first potential differences; sending a transmit instruction to the electric field source component, emitting an electrical signal through the electric field source component to form an electric field, acquiring multiple second received electrical signals through multiple receiving electrodes, and acquiring multiple second reference electrical signals through the reference electrode; for each second received electrical signal, calculating the potential difference between the second received electrical signal and the second reference electrical signal, and using the potential difference as the second potential difference to acquire multiple second potential differences.

[0034] Here, the specific implementation methods corresponding to each module are the same as or similar to the specific implementation example of step S11, and thus will not be described in detail and are included herein by reference.

[0035] In some embodiments, multiple first and second potential differences are calculated based on multiple first potential differences and multiple second potential differences, including: for each first potential difference, determining the second potential difference corresponding to the first potential difference based on the position coordinate information of the first potential difference, and obtaining multiple groups of corresponding first potential differences and second potential differences, wherein the first potential difference and the second potential difference corresponding to the first potential difference have the same position coordinate information; 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 and second potential differences, to obtain multiple first and second potential differences; detecting whether there is leakage in the pipeline based on the multiple first and second potential differences, wherein if there is leakage in the pipeline, there is a target first and second potential difference among the multiple 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 the target difference.

[0036] Here, the specific implementation methods corresponding to modules 1 and 2 are the same as or similar to the specific implementation method of step S12, and thus will not be described in detail but are included herein by reference.

[0037] In some embodiments, detecting whether there is leakage in a pipeline 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 vertical coordinate information of 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, the difference between the target first and second potential difference and the previous first and second potential difference before the target first and second potential difference is equal to or greater than the target difference, and it is determined that there is leakage in the pipeline, wherein the previous first and second potential difference includes the horizontal coordinate information of the previous first and second potential difference being less than the target first and second potential difference.

[0038] Here, the specific implementation methods corresponding to modules 1 and 2 are the same as or similar to the specific implementation method of step S12, and thus will not be described in detail and are included herein by reference.

[0039] In some embodiments, if there is a leakage in the pipeline, N transmission instructions are sent to the electric field source component, and a second average normalized value and multiple first average normalized values ​​are determined based on the received electrical signals acquired N times by multiple receiving electrodes, including: if there is a leakage in the pipeline, N transmission instructions are sent to the electric field source component, and multiple received electrical signals are acquired through multiple receiving electrodes; for each of the multiple received electrical signals acquired, the multiple received electrical signals are normalized according to the position coordinate information of the multiple received electrical signals to obtain the first normalized value corresponding to each position coordinate information, thereby obtaining N first normalized values ​​corresponding to each position coordinate information; the average value of the N first normalized values ​​corresponding to each position coordinate information is calculated to obtain the first average normalized value corresponding to the position coordinate information; the average value of all first average normalized values ​​is calculated, and the average value 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 of the target multiple, the leakage position of the pipeline is determined according to the horizontal coordinate information corresponding to the target first average normalized value.

[0040] Here, the specific implementation corresponding to the one-three modules is the same as or similar to the specific implementation of step S13, and thus will not be described in detail and is included herein by reference.

[0041] In some embodiments, for the multiple received electrical signals acquired each time, the multiple received electrical signals are normalized according to the position coordinate information of the multiple received electrical signals 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 the multiple received electrical signals acquired each time, 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 electrical signal set, the multiple received electrical signals in the electrical signal set are normalized to obtain the first normalized value corresponding to each position coordinate information in the electrical signal set, thereby obtaining N first normalized values ​​corresponding to each position coordinate information.

[0042] Here, the specific implementation corresponding to the one-three modules is the same as or similar to the specific implementation of step S13, and thus will not be described in detail and is included herein by reference.

[0043] In some embodiments, the device further includes a module (not shown), which is used to filter the target received electrical signal according to the coordinate information of the received electrical signal to remove the target received electrical signal, wherein the position coordinate information of the target received electrical signal is within the target area, and the target area includes a circle with the first electric field source probe as the center and the target radius as the radius, and the target radius is obtained by the following calculation method: , where d includes the target radius, D includes the vertical distance from the receiving electrode to the upper surface of the pipe, , where I (A) includes the emission current of the electric field source probe, and R (Ω) includes the ground resistance of the emission loop.

[0044] Here, the specific implementation corresponding to the one-fourth module is the same as or similar to the specific implementation of step S14, and thus will not be described in detail and is included herein by reference.

[0045] In addition to the methods and devices described in the above embodiments, the present application also provides a computer-readable storage medium, which stores computer code. When the computer code is executed, the method of any of the preceding items is executed.

[0046] The present application also provides a computer program product. When the computer program product is executed by a computer device, any of the above methods is executed.

[0047] The present application also provides a computer device, the computer device comprising: one or more processors; a memory for storing one or more computer programs; When one or more computer programs are executed by one or more processors, the one or more processors are caused to implement any of the methods described above.

[0048] Figure 6 An exemplary system that can be used to implement various embodiments of the present application is shown; like Figure 6 In some embodiments shown, the system 300 can be used as any one of the devices in various embodiments. In some embodiments, the system 300 may include one or more computer-readable media (e.g., system memory or NVM / storage device 320) with instructions and one or more processors (e.g., (one or more) processors 305) coupled to the one or more computer-readable media and configured to execute instructions to implement modules to perform actions in the present application.

[0049] For one embodiment, system control module 310 may include any suitable interface controller to provide any suitable interface to at least one of processor(s) 305 and / or any suitable device or component in communication with system control module 310 .

[0050] The system control module 310 may include a memory controller module 330 to provide an interface to the system memory 315. The memory controller module 330 may be a hardware module, a software module, and / or a firmware module.

[0051] The system memory 315 may be used, for example, to load and store data and / or instructions for the system 300. For one embodiment, the system memory 315 may include any suitable volatile memory, such as a suitable DRAM. In some embodiments, the system memory 315 may include double data rate type four synchronous dynamic random access memory (DDR4 SDRAM).

[0052] For one embodiment, system control module 310 may include one or more input / output (I / O) controllers to provide interfaces to NVM / storage device 320 and communication interface(s) 325 .

[0053] For example, NVM / storage device 320 may be used to store data and / or instructions. NVM / storage device 320 may include any suitable non-volatile memory (e.g., flash memory) and / or may 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).

[0054] NVM / storage device 320 may include storage resources that are physically part of the device on which system 300 is installed, or it may be accessible to the device without being part of the device. For example, NVM / storage device 320 may be accessed over a network via communication interface(s) 325.

[0055] Communication interface(s) 325 may provide an interface for system 300 to communicate over one or more networks and / or with any other suitable devices. System 300 may wirelessly communicate with one or more components of a wireless network in accordance with any of one or more wireless network standards and / or protocols.

[0056] For one embodiment, at least one of the processor(s) 305 may be packaged together with the 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 may be packaged together with the logic of one or more controllers of the system control module 310 to form a system-in-package (SiP). For one embodiment, at least one of the processor(s) 305 may be integrated on the same die with the logic of one or more controllers of the system control module 310. For one embodiment, at least one of the processor(s) 305 may be integrated on the same die with the logic of one or more controllers of the system control module 310 to form a system on chip (SoC).

[0057] In various embodiments, the system 300 may 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 computer, a netbook, etc.). In various embodiments, the system 300 may have more or fewer components and / or a different architecture. For example, in some embodiments, the system 300 includes one or more cameras, a keyboard, a liquid crystal display (LCD) screen (including a touch screen display), a non-volatile memory port, multiple antennas, a graphics chip, an application specific integrated circuit (ASIC), and a speaker.

[0058] It should be noted that the present application can be implemented in software and / or a combination of software and hardware, for example, it can be implemented using an application-specific integrated circuit (ASIC), a general-purpose computer or any other similar hardware device. In one embodiment, the software program of the present application can be executed by a processor to implement the above steps or functions. Similarly, the software program of the present application (including related data structures) can be stored in a computer-readable recording medium, for example, a RAM memory, a magnetic or optical drive or a floppy disk and the like. In addition, some steps or functions of the present application can be implemented using hardware, for example, as a circuit that cooperates with a processor to perform various steps or functions.

[0059] In addition, a part of the present application may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present application through the operation of the computer. Those skilled in the art should understand that the existence of computer program instructions in computer-readable media includes but is not limited to source files, executable files, installation package files, etc., and accordingly, the way in which computer program instructions are executed by a computer includes but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to the computer.

[0060] Communication media include media by which communication signals containing, for example, computer readable instructions, data structures, program modules, or other data are transmitted from one system to another. Communication media may include guided transmission media such as cables and wires (e.g., fiber optic, coaxial, etc.) and wireless (unguided transmission) media that can propagate energy waves, such as acoustic, electromagnetic, RF, microwave, and infrared. Computer readable instructions, data structures, program modules, or other data may be embodied as a modulated data signal in, for example, a wireless medium such as a carrier wave or similar mechanism such as embodied as part of spread spectrum technology. The term "modulated data signal" refers to a signal whose one or more characteristics are changed or set in such a manner as to encode information in the signal. Modulation may be analog, digital, or a hybrid modulation technique.

[0061] By way of example and not limitation, computer-readable storage media may include volatile and nonvolatile, 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 include, but are not limited to, volatile memory, such as random access memory (RAM, DRAM, SRAM); and non-volatile memory, such as flash memory, various read-only memories (ROM, PROM, EPROM, EEPROM), magnetic and ferromagnetic / ferroelectric memories (MRAM, FeRAM); and magnetic and optical storage devices (hard disks, magnetic tapes, CDs, DVDs); or other media now known or later developed that can store computer-readable information / data for use with a computer system.

[0062] Here, according to an embodiment of the present application, a device is included, which includes 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 methods and / or technical solutions based on the aforementioned multiple embodiments of the present application.

[0063] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application.

Claims

1. A method for improving the accuracy of pipeline leakage detection by using a detection device, characterized in that: Applied to non-metallic pipelines, the detection device includes a host and an electric field source component, a receiving electrode component and a reference electrode electrically connected to the host respectively; wherein the receiving electrode component is arranged in the detection area of ​​the pipeline, and a plurality of received electrical signals are obtained through the receiving electrode component; the reference electrode is arranged at the detection tail end of the pipeline, and a reference electrical signal is obtained through the reference electrode; the method includes: Acquire a plurality of first potential differences and a plurality of second potential differences; wherein the potential difference comprises a potential difference value between a received electrical signal and a reference electrical signal, the first potential difference is acquired before sending a transmission instruction to the electric field source component, and the second potential difference is acquired after sending a transmission instruction to the electric field source component; A plurality of first and 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 and second potential differences are used to detect whether the pipeline has leakage, and if the pipeline has leakage, there is a target first and second potential difference among the plurality of first and second potential differences, and the difference between the target first and second potential difference and the first and second potential difference before the target first and second potential difference is equal to or greater than the target difference; If there is a leakage in the pipeline, N transmission instructions are sent to the electric field source component, and a second average normalized value and multiple first average normalized values ​​are determined based on the received electrical signals obtained N times by the receiving electrode component. 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 of the target multiple, the leakage position of the pipeline is determined based on the horizontal coordinate information corresponding to the target first average normalized value, and 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 arranged inside the liquid in the pipeline, and the second electric field source probe is arranged outside the pipeline, and the obtaining of a plurality of first potential differences and a plurality of second potential differences includes: Before sending a transmission instruction to the electric field source component, obtaining a plurality of first potential differences through the reference electrode and the plurality of receiving electrodes; A transmission instruction is sent to the electric field source component, and a plurality of second potential differences are acquired through the reference electrode and the plurality of receiving electrodes.

3. The method according to claim 2, characterized in that Before sending a transmission instruction to the electric field source probe, a plurality of first potential differences are obtained through the reference electrode and the plurality of receiving electrodes; Sending a transmission instruction to the electric field source probe, and acquiring a plurality of second potential differences through the reference electrode and the plurality of receiving electrodes, comprises: Before sending a transmission instruction to the electric field source component, a plurality of first receiving 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, calculating a potential difference between the first received electrical signal and the first reference electrical signal, and using the potential difference as a first potential difference to obtain a plurality of first potential differences; Sending a transmission instruction to the electric field source component, transmitting an electric signal through the first electric field source probe and the second electric field source probe to form an electric field, acquiring a plurality of second received electric signals through the plurality of receiving electrodes, and acquiring a plurality of second reference electric signals through the reference electrodes; For each second received electrical signal, a 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 a plurality of second potential differences.

4. The method according to claim 1, characterized in that: The step of calculating a plurality of first and second potential differences according to the plurality of first potential differences and the plurality of second potential differences comprises: For each first potential difference, determine the second potential difference corresponding to the first potential difference according to the position coordinate information of the first potential difference, and obtain multiple groups of corresponding first potential differences and second potential differences, wherein the position coordinate information of the first potential difference is the same as the second potential difference corresponding to the first potential difference; For each group of corresponding first potential difference and second potential difference, the potential difference between the first potential difference and the second potential difference is used as the first second potential difference to obtain a plurality of first second potential differences; Whether the pipeline has leakage is detected based on the multiple first and second potential differences, wherein if the pipeline has leakage, there is a target first and second potential difference among the multiple first and second potential differences, and the difference between the target first and second potential difference and the previous first and second potential difference before the target first and second potential difference is equal to or greater than the target difference.

5. The method according to claim 4, characterized in that The detecting whether the pipeline has leakage according to the plurality of first and second potential differences comprises: Dividing the plurality of first and second potential differences into a plurality of potential difference sets according to the position coordinate information of each first and second potential difference, wherein each potential difference set includes a plurality of first and second potential differences arranged in sequence, and the plurality of first and second potential differences in the same potential difference set have the same vertical coordinate information; 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 the previous first-second potential difference before the target first-second potential difference is equal to or greater than the target difference, it is determined that there is leakage in the pipeline, wherein the previous first-second potential difference includes the horizontal coordinate information of the previous first-second potential difference which is less than the target first-second potential difference.

6. The method according to claim 1, characterized in that If the pipeline has leakage, N transmission instructions are sent to the electric field source component, and a second average normalized value and a plurality of first average normalized values ​​are determined according to the received electrical signals acquired N times by the plurality of receiving electrodes, including: If there is leakage in the pipeline, N transmission instructions are sent to the electric field source component, and multiple receiving electrical signals are acquired through the multiple receiving electrodes; For each of the multiple received electrical signals acquired, normalizing the multiple received electrical signals according to the position coordinate information of the multiple received electrical signals to obtain a first normalized value corresponding to each position coordinate information, thereby obtaining N first normalized values ​​corresponding to each position coordinate information; Calculate the average value of the N first normalized values ​​corresponding to each position coordinate information to obtain the first average normalized value corresponding to the position coordinate information; Calculate the average of all first average normalized values, and use the average 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 of the target multiple, the leakage position of the pipeline is determined according to the horizontal coordinate information corresponding to the target first average normalized value.

7. The method according to claim 6, characterized in that The method of normalizing the multiple received electrical signals acquired each time according to the position coordinate information of the multiple received electrical signals to obtain multiple first normalized values ​​corresponding to each position coordinate information, thereby obtaining N first normalized values ​​corresponding to each position coordinate information, includes: For each of the multiple received electrical signals acquired, 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 electrical signal set, multiple received electrical signals in the electrical signal set are normalized to obtain a first normalized value corresponding to each position coordinate information in the electrical signal set, thereby obtaining N first normalized values ​​corresponding to each position coordinate information.

8. The method according to claim 1, characterized in that Before determining the second average normalized value and the plurality of first average normalized values ​​according to the received electrical signals acquired N times by the plurality of receiving electrodes, the method further comprises: The target received electrical signal is filtered according to the coordinate information of the received electrical signal to remove the target received electrical signal, wherein the position coordinate information of the target received electrical signal is within a target area, the target area includes a circle with the first electric field source probe as the center and the target radius as the radius, and the target radius is obtained by the following calculation method: Here, d includes the target radius, D includes the vertical distance from the receiving electrode to the upper surface of the pipe, Here, the I (A) includes the emission current of the electric field source probe, and the R (Ω) includes the ground resistance of the emission loop.

9. A computer device for improving the accuracy of pipeline leakage detection through a detection device, 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 according to any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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