Regional cathodic protection control system

Abstract

The present application discloses a regional cathodic protection control system, comprising a first detection unit, a second detection unit, and a flow regulating device; wherein, the first detection unit is used to detect the cathodic protection parameters of the first pipe section, and the second detection unit is used to detect the cathodic protection parameters of the second pipe section; the first pipe section and the second pipe section are connected via an insulating head, and the flow regulating device is connected in parallel to the insulating head; the flow regulating device is used to detect the cross-current flowing through the insulating head, and regulate the cross-current according to the cathodic protection parameters. The system can keep the cathodic protection potential in a state of dynamic equilibrium, reduce the impact of stray current on the pipeline cathodic protection system when it is not restricted, improve the availability of cathodic protection, and thereby improve the operational safety and stability of the buried pipeline cathodic protection system. The present application can be widely used in the field of cathodic protection technology.

Description

Technical Field

[0001] The present application relates to the technical field of cathodic protection, and in particular to a regional cathodic protection control system. Background Art

[0002] With the continued development and popularity of transportation modes like subways, the stray currents generated by these rail transit systems are increasingly interfering with the cathodic protection systems of surrounding buried steel pipelines. Buried steel pipelines are typically electrically insulated and separated into two or more sections by insulating headers. Existing cathodic protection systems typically utilize external reinforced current protection, where a single device can protect multiple buried steel pipeline sections.

[0003] Urban rail transit can generate large amounts of high-energy surge currents during operation. Existing cathodic protection systems experience these surge currents far exceeding the protection current of the system. This causes the protection potential of buried steel pipelines in areas where stray currents flow in to experience a significant negative shift, even exceeding the permitted range in regulatory regulations. Meanwhile, the protection potential of buried steel pipelines in areas where stray currents flow out experiences a significant positive shift, even reaching a level of underprotection and failing to meet regulatory standards. This disrupts the cathodic protection function and significantly impacts the operational safety and stability of the buried pipeline cathodic protection system.

[0004] In summary, the problems existing in related technologies need to be solved urgently. Summary of the Invention

[0005] The purpose of this application is to solve one of the technical problems existing in the related art to at least a certain extent.

[0006] To this end, one purpose of an embodiment of the present application is to provide a regional cathodic protection control system.

[0007] In order to achieve the above technical objectives, the technical solutions adopted in the embodiments of the present application include:

[0008] In one aspect, an embodiment of the present application provides a regional cathodic protection control system, comprising:

[0009] a first detection unit, a second detection unit, and a flow regulating device;

[0010] The first detection unit is used to detect the cathodic protection parameters of the first pipe section, and the second detection unit is used to detect the cathodic protection parameters of the second pipe section; the first pipe section and the second pipe section are connected via an insulating head, and the flow regulating device is connected in parallel to the insulating head;

[0011] The current regulating device is used to detect the cross-current flowing through the insulating head and regulate the cross-current according to the cathodic protection parameters.

[0012] In addition, the regional cathodic protection control system according to the above embodiment of the present application may also have the following additional technical features:

[0013] Furthermore, in one embodiment of the present application, the first detection unit includes a plurality of first detection devices, each of which is used to detect cathodic protection parameters at different detection points on the first pipe section.

[0014] Furthermore, in one embodiment of the present application, the cathodic protection parameter includes at least one of a test piece current, a test piece power-off potential, and a power-on potential.

[0015] Furthermore, in one embodiment of the present application, the flow regulation device includes a discharge control module, a flow regulation control module, a multi-channel isolation energy collection module, a cathodic protection parameter acquisition module, an anti-theft and anti-disassembly module, a communication transmission module, a data processing module, a power management module and a monitoring module.

[0016] Furthermore, in one embodiment of the present application, the regional cathodic protection control system further includes a host computer;

[0017] The host computer is remotely communicated with the flow regulating device;

[0018] The host computer is used to receive the cathodic protection parameters, determine a control instruction according to the cathodic protection parameters, and send the control instruction to the current regulating device so that the current regulating device regulates the cross-current flowing through the insulating head.

[0019] Furthermore, in one embodiment of the present application, the host computer is also used to perform at least one of the following tasks: dynamic optimization of signal sampling frequency, analysis and judgment of stray current interference sources, and online anti-theft monitoring.

[0020] Furthermore, in one embodiment of the present application, the host computer is specifically used to:

[0021] Obtaining the selected stray current sampling frequency;

[0022] Sending the stray current sampling frequency to a target detection unit so that the target detection unit performs signal sampling according to the stray current sampling frequency; the target detection unit includes a first detection unit or a second detection unit;

[0023] Receive spectrum analysis data uploaded by the target detection unit; the spectrum analysis data is obtained based on the signal sampling analysis.

[0024] Furthermore, in one embodiment of the present application, the host computer is specifically used to:

[0025] Collect signal spectrum characteristic data corresponding to various stray current sources and cathodic protection system failures;

[0026] Establishing a spectrum feature database according to the signal spectrum feature data;

[0027] The current stray current interference source is determined according to the spectrum feature database.

[0028] Furthermore, in one embodiment of the present application, the anti-theft and anti-disassembly module includes a light sensing sensor, a vibration sensing sensor and a disassembly sensing jumper wire.

[0029] The advantages and benefits of this application will be partially given in the following description, and partially become apparent from the following description, or learned through practice of this application:

[0030] The embodiment of the present application discloses a regional cathodic protection control system, comprising: a first detection unit, a second detection unit, and a flow regulating device; wherein the first detection unit is used to detect the cathodic protection parameters of the first pipe segment, and the second detection unit is used to detect the cathodic protection parameters of the second pipe segment; the first pipe segment and the second pipe segment are connected via an insulating head, and the flow regulating device is connected in parallel to the insulating head; the flow regulating device is used to detect the cross-current flowing through the insulating head and regulate the cross-current according to the cathodic protection parameters. This system can keep the cathodic protection potential in a state of dynamic equilibrium, reduce the impact of stray current on the pipeline cathodic protection system when it is not restricted, improve the availability of cathodic protection, and thereby improve the operational safety and stability of the buried pipeline cathodic protection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following introduction is made to the drawings of the embodiments of the present application or the related technical solutions in the prior art. It should be understood that the drawings introduced below are only for the convenience of clearly describing some embodiments of the technical solutions of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 This is a schematic structural diagram of a regional cathodic protection control system provided in an embodiment of the present application;

[0033] Figure 2 This is a structural schematic diagram of a flow regulating device of a regional cathodic protection control system provided in an embodiment of the present application;

[0034] Figure 3 A circuit diagram of a multi-channel isolated energy harvesting module of a regional cathodic protection control system provided in an embodiment of the present application;

[0035] Figure 4 This is a structural diagram of an anti-theft and anti-disassembly module of a regional cathodic protection control system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. The described embodiments should not be considered as limiting the present application. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0039] With the continuous development and popularization of transportation modes such as subways, the stray currents generated during rail transit operation are increasingly interfering with the cathodic protection systems of surrounding buried steel pipelines. Buried steel pipelines are usually electrically insulated and separated into two or more sections by insulating heads. Existing cathodic protection systems usually use external reinforced current protection. One external reinforced current device can protect multiple buried steel pipe sections. Specifically, existing cathodic protection systems have the following characteristics:

[0040] 1) The pipe sections on both sides of the insulating head are usually connected by cables or drainage devices.

[0041] 2) For current measurement at locations such as insulation heads and pipeline protection potential measurement, existing technologies usually only detect AC and DC parameters.

[0042] 3) Buried gas pipelines are usually located in the suburbs, and the detection equipment is generally powered by solar energy, disposable batteries or rechargeable batteries.

[0043] 4) Buried gas pipelines are usually located in the suburbs, and the anti-theft method of the detection equipment generally uses a special key method.

[0044] Among them, because urban rail transit generates a large amount of high-energy impact current during operation, the existing cathodic protection system does not limit the connection current of pipe sections that use insulating heads as electrical insulation separations (the existing technology does not limit this connection current when directly connecting or connecting through a drainage device (drain)). This impact current is much larger than the protection current of the cathodic protection system, causing the protection potential of buried steel pipelines in the area where stray current flows into to have a large negative offset, even exceeding the range allowed by the specification; and the protection potential of buried steel pipelines in the area where stray current flows out to have a large positive offset, even falling into the under-protection and non-compliant range. This results in interference with the cathodic protection effect, greatly affecting the operational safety and stability of the buried pipeline cathodic protection system.

[0045] In view of this, an embodiment of the present application provides a regional cathodic protection control system, comprising a first detection unit, a second detection unit, and a flow regulating device; wherein the first detection unit is used to detect the cathodic protection parameters of the first pipe segment, and the second detection unit is used to detect the cathodic protection parameters of the second pipe segment; the first pipe segment and the second pipe segment are connected via an insulating head, and the flow regulating device is connected in parallel to the insulating head; the flow regulating device is used to detect the cross-current flowing through the insulating head and regulate the cross-current according to the cathodic protection parameters. This system can keep the cathodic protection potential in a state of dynamic equilibrium, reduce the impact of stray current on the pipeline cathodic protection system when it is not restricted, improve the availability of cathodic protection, and thereby improve the operational safety and stability of the buried pipeline cathodic protection system.

[0046] Below, the regional cathodic protection control system in the embodiment of the present application is first explained and illustrated.

[0047] Reference Figure 1 In the embodiment of the present application, the regional cathodic protection control system mainly includes:

[0048] a first detection unit, a second detection unit, and a flow regulating device;

[0049] The first detection unit is used to detect the cathodic protection parameters of the first pipe section 1, and the second detection unit is used to detect the cathodic protection parameters of the second pipe section 2; the first pipe section 1 and the second pipe section 2 are connected via an insulating head 3, and the flow regulating device is connected in parallel to the insulating head 3;

[0050] The current regulating device is used to detect the cross-current flowing through the insulating head 3 and regulate the cross-current according to the cathodic protection parameters.

[0051] In an embodiment of the present application, a regional cathodic protection control system is provided. Figure 1The structure of the system when it is implemented in a self-organizing network is shown. The system is applied to a circuit pipe segment including an insulating head, wherein the circuit pipe segment includes a first pipe segment and a second pipe segment, and the first pipe segment and the second pipe segment are connected by the insulating head. Figure 1 , the current flows from the first pipe section to the second pipe section. The regional cathodic protection control system provided in the embodiment of the present application includes a first detection unit, a second detection unit and a flow regulating device, wherein the first detection unit is used to detect the cathodic protection parameters of the first pipe section, and the second detection unit is used to detect the cathodic protection parameters of the second pipe section. Specifically, a plurality of detection points can be set on the first pipe section and the second pipe section, and the specific number of detection points and the intervals between each detection point can be flexibly set as needed, and the present application does not impose any restrictions on this. For each detection point, a group of detection equipment can be set to detect the cathodic protection parameters there. In other words, taking the first detection unit as an example, it can include a plurality of first detection devices, and these detection devices can be used to detect the cathodic protection parameters at different detection points on the first pipe section. Similarly, the second detection unit can also include a plurality of second detection devices, and its function is similar to that of the first detection device, which will not be described in detail here.

[0052] In some more detailed embodiments, the first detection unit and the second detection unit can be responsible for dynamically detecting at least one of the corresponding cathodic protection parameters such as the test piece current, the test piece power-off potential, the power-on potential, etc. These data can be processed to generate corresponding control instructions so that the current regulation device can regulate the cross-current flowing through the insulating head.

[0053] Specifically, refer to Figure 2 For the flow regulation device in the embodiment of the present application, it may include a discharge control module, a flow regulation control module, a multi-channel isolation energy collection module, a cathodic protection parameter acquisition module, an anti-theft and anti-disassembly module, a communication transmission module, a data processing module, a power management module and a monitoring module.

[0054] In an embodiment of the present application, a drain (PL) control module mainly includes a drain control circuit and a field effect transistor, which is used to monitor the forward voltage drop of the drain in real time. If the forward voltage drop is greater than a certain threshold (such as 50mV), a driving voltage will be used to drive the field effect transistor to turn on. After the field effect transistor is turned on, the forward current of the stray current (flowing to the constant potentiostat) can pass through the drain with large current and low voltage drop; if a reverse voltage drop occurs at both ends of the drain, the field effect transistor is turned off, so that the directional current cannot pass through the drain control module, thereby realizing the unidirectional conduction function.

[0055] The current regulation (TL) control module primarily consists of a current regulation control circuit and field-effect transistors. It monitors the current flowing through the shunt in real time by detecting the millivolt voltage across the shunt. The millivolt voltage generated by this current across the shunt is amplified and compared with a given signal to determine the difference. This difference is then used in a PID control circuit to generate a control voltage that drives the field-effect transistor to regulate the current. The combination of the unidirectional conduction function of the drain control module and the current regulation function of the current regulation module achieves unidirectional regulation of stray currents.

[0056] The multi-channel isolated energy harvesting module is used to realize multi-channel isolated power supply and independently supply power to each module, eliminating the traditional battery-isolation transformer-rectifier method, overcoming the disadvantage of high overall energy consumption of "battery-isolation transformer-rectifier", and extending the battery life. Specifically, refer to Figure 3 The centralized multi-channel isolated energy harvesting module can be composed of multiple identical independent isolated energy harvesting modules. This module places an isolation transformer in front of the module and adopts an "isolation transformer-rectifier-boost-charge-storage-consumer" model, rather than the traditional "battery-isolation transformer-consumer" model, which can reduce battery energy loss. T1-T3 converts the alternating current flowing through the through-hole transformer into a secondary low-voltage voltage source; the rectifier current is used to rectify this into a DC voltage, which is limited by capacitors and voltage-stabilizing components to reduce ripple interference; the low-voltage DC power source is boosted by a boost circuit and charged to the rechargeable battery, achieving multi-channel isolated energy harvesting.

[0057] The cathodic protection parameter acquisition module can realize the cathodic protection data detection and signal spectrum data acquisition (analog part) of this detection point. The anti-theft and anti-tampering module can realize the continuous online anti-theft detection function; the communication transmission module can realize remote communication and wireless data transmission functions.

[0058] In some embodiments, the regional cathodic protection control system provided in the embodiments of the present application may further include a host computer. When a self-organizing network system is used, that is, when the host computer does not participate in the control, the regional cathodic protection control system is implemented by the first detection unit, the second detection unit, and the flow regulating device at the insulating head to realize the data collection and control work of each detection point. At this time, the cathodic protection parameters detected by each detection point can be directly transmitted to the flow regulating device, and the flow regulating device can be autonomously regulated or work according to a given current that has been debugged in advance. When the host computer participates in the work, the cathodic protection parameters detected by each detection point can be transmitted to the host computer for processing. The host computer is responsible for receiving, analyzing, and storing data from various parts of the system, and processing and controlling various functional modules. Such as the dynamic display and management of the cathodic protection parameters of the first pipe section and the second pipe section, tracking, analyzing and judging the source of stray current interference, online continuous anti-theft monitoring, and other report processing.

[0059] Specifically, in the embodiment of the present application, the regional cathodic protection control system can respectively collect the test piece current signal spectrum and cathodic protection potential at each detection point of the first pipe section and the second pipe section, collect the cross-connection current signal spectrum and current and potential data (at the insulation head) of the first pipe section and the second pipe section, and realize the following functions through analysis and judgment by the host computer:

[0060] 1. Adjust the cross-over current of the insulating head to achieve a dynamic balance between the cathodic protection potentials of the first and second pipe sections. The host computer collects and analyzes the cathodic protection currents of each test point in the first and second pipe sections. If the cathodic protection potential of the first pipe section is too negative (for example, the power-off potential of the test piece is negative than -1.25V) or the cathodic protection potential of the second pipe section is too positive (for example, the test piece potential is positive than -0.85V), the cross-over current flowing through the insulating head will be readjusted to limit the excessive stray current from flowing from the first pipe section to the second pipe section, thereby reducing the impact of the stray current on the cathodic protection potential of the second pipe section.

[0061] 2. Dynamically optimize the signal sampling frequency. The spectrum of the stray current is collected and analyzed to dynamically adjust the sampling frequency of the current and potential signals at each detection point to ensure that the sampling frequency and sampling accuracy are within the optimal range. This avoids the situation where the sampling frequency is too high, resulting in a high bit error rate in the collected data, or the sampling frequency is too low, resulting in distorted data that cannot truly reflect the detected signal.

[0062] 3. Analysis and judgment of stray current interference sources. The spectrum of stray current is collected, analyzed, stored, tracked and compared, and the interference source is preliminarily determined based on the spectrum characteristics of various interference sources. For example, the AC component of the spectrum diagram of DC-driven urban rail transit and AC-driven urban rail transit will be quite different; long-term spectrum feature tracking and analysis can be used to understand the management status of urban rail transit and changes in urban rail transit operations, and to prepare in advance for the management of stray currents in buried steel pipelines; the current spectrum of buried pipelines is monitored to determine whether there is any illegal detection. When the pipeline detection instrument loads the signal spectrum characteristics, if it is not a detection task issued by us, it is considered an illegal detection.

[0063] 4. Continuous online anti-theft monitoring. If the device's external explosion-proof junction box is disassembled, the test pile is illegally pushed down, cut and stolen, or the anti-theft components are removed after disassembly, the on-site detection device will trigger a remote alarm and convey the anti-theft information in real time.

[0064] Specifically, when the host computer performs the task of dynamically optimizing the signal sampling frequency, it can initially select a higher stray current sampling frequency (such as 100kHz) and then send this frequency to the target detection unit (the first detection unit or the second detection unit). The target detection unit performs fast Fourier analysis on the collected signal and uploads the spectrum analysis data to the data platform (host computer). This frequency range covers most of the higher-frequency pipeline detection signal frequencies. Next, a lower stray current sampling frequency (such as 2kHz) can be selected. Similarly, the target detection unit performs fast Fourier analysis on the collected signal and uploads the spectrum analysis data to the host computer. This frequency range covers the general frequency pipeline detection signal frequency and other interference signals. Then, the highest signal frequency f1 of the stray current can be determined, and the stray current sampling frequency (such as 2*f1) can be selected again. The target detection unit performs fast Fourier analysis on the collected signal and uploads the spectrum analysis data to the host computer. This frequency range covers most of the urban rail transit stray current frequencies and the current frequency of the cathodic protection system. This link realizes the high-precision signal data collection and upload of signals containing urban rail transit stray currents.

[0065] The above method is used to monitor and collect the potential and current signal spectra at each detection point and the flow regulating device (at the insulated joint) in the first and second pipe sections. The data is then transmitted to a host computer via a wireless network. By periodically performing the above spectrum analysis, each detection point first understands the frequency composition of the detected signal and analyzes and determines the highest effective frequency of the detected signal. Then, an appropriate sampling frequency is adopted and a high-precision ADC integrated circuit is used for digital-to-analog conversion, thus compromising the combined impact of sampling frequency on sampling accuracy and bit error rate.

[0066] When the host computer performs the task of analyzing and judging the source of stray current interference, first, based on existing knowledge, it can be learned that the sources of stray current mainly include DC-driven urban rail transit, high-voltage DC transmission lines, cathodic protection systems added to other pipelines, AC-driven urban rail transit, high-voltage AC transmission lines, etc. In the embodiment of the present application, the potential and current signal spectra of each stray current source can be collected in a targeted manner and their signal frequency characteristics can be analyzed to obtain signal spectrum feature data and establish a spectrum feature database. At the same time, the signal spectrum feature data when the cathodic protection system fails can be collected and added to the spectrum feature database.

[0067] Next, the host computer can compare the frequency composition characteristics of the detection signals of each detection point and the flow regulating device (insulated joint) of the first and second pipe sections with the spectrum feature library to determine the source of the stray current interference. Long-term spectrum feature tracking and library analysis can be used to understand the changes in each stray current and prepare for the control of stray currents in advance. The current spectrum of the buried pipeline is monitored. When the spectrum characteristics of the signal loaded by the pipeline detection instrument are detected, if it is not a detection task issued by us, it will be regarded as an illegal detection, or a pipeline network abnormality alarm will be issued when the cathodic protection system fails.

[0068] Reference Figure 4 In an embodiment of the present application, the anti-theft and anti-disassembly module includes a light sensing sensor, a vibration sensing sensor and a disassembly sensing jumper wire, which are encapsulated in an equipment compartment as an anti-theft and anti-disassembly module.

[0069] In the embodiment of the present application, if the device is opened and exposed to visible light or flashlight during the detection process, a photoelectric effect is generated, causing the voltage to change and migrate. The monitoring module monitors this change online and determines that the explosion-proof junction box of the device has been opened manually, thereby triggering a remote alarm. The vibration sensor contains a highly sensitive vibration switch. When the test pile is vibrated (such as pushed down or cut), the vibration switch will send out a series of on-off changes. The monitoring module monitors this on-off situation. When it reaches a certain frequency, it will be confirmed as a valid abnormal signal and trigger a remote alarm. The dismantling sensing jumper is mainly used to detect the event of manual dismantling of anti-theft components, triggering a remote alarm in time to inform the dismantling situation. The three alarm sensors are combined into a whole and connected to the detection equipment to achieve the concealment and beauty of the alarm during equipment detection, and also save a part of the operating space for the detection equipment.

[0070] It can be understood that the regional cathodic protection control system provided in the embodiments of the present application has at least the following advantages:

[0071] 1. The present invention adopts an online continuous current regulation method to set the cross-over current flowing through the insulating head of two buried steel pipe sections, so that the cathodic protection potential of the buried steel pipeline section where the stray current flows into the area and the buried steel pipeline section where the stray current flows out are in a dynamic equilibrium state, reducing the impact of stray current on the pipeline cathodic protection system when it is not restricted.

[0072] 2. First, the detected signal is quickly acquired and spectrally analyzed (Fast Fourier Analysis) to determine the frequency composition of the detected signal and the highest effective frequency of the detected signal. Appropriate sampling is then used to perform digital-to-analog conversion using a high-precision ADC integrated circuit. By adopting an appropriate sampling frequency, the combined impact of high and low sampling frequencies on sampling accuracy and bit error rate is resolved.

[0073] 3. A transformer is used to convert the AC component of the stray current into a reusable AC power signal. This power signal is used to charge the rechargeable battery through energy collection, and then to power the detection equipment. Through multiple sets of transformers and energy collection circuits, isolated power supply for multi-channel detection signals can be achieved, thereby reducing the traditional isolated power supply, minimizing battery loss, and realizing the self-supply of power for the detection equipment to achieve the purpose of long-term online operation.

[0074] 4. Utilizing multiple status (light, vibration, etc.) online detection, the alarm device and detection equipment are integrated into a single unit, enabling convenient deployment and accurate detection. If the equipment's external explosion-proof junction box is disassembled, the test station is cut or knocked over, or the anti-theft component is removed, online monitoring of the light sensor, vibration sensor, and anti-tamper jumper wire triggers a remote alarm in real time, reporting equipment status information and promptly notifying inspectors for on-site inspections, thereby preventing equipment theft and illegal disassembly.

[0075] In addition, although the present application is described in the context of functional modules, it should be understood that, unless otherwise stated, one or more of the functions and / or features may be integrated into a single physical device and / or software module, or one or more functions and / or features may be implemented in separate physical devices or software modules. It is also understood that a detailed discussion of the actual implementation of each module is not necessary for understanding the present application. More specifically, given the properties, functions, and internal relationships of the various functional modules in the devices disclosed herein, the actual implementation of the module will be understood within the routine skills of an engineer. Therefore, a person skilled in the art can implement the present application as set forth in the claims using ordinary techniques without undue experimentation. It is also understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present application, which is determined by the full scope of the appended claims and their equivalents.

[0076] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0077] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0078] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0079] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0080] In the above description of this specification, reference to the terms "one embodiment / example," "another embodiment / example," or "certain embodiments / examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0081] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

[0082] The above is a detailed description of the preferred implementation of the present application, but the present application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

[0083] In the description of this specification, reference to the terms "one embodiment," "another embodiment," or "certain embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A regional cathodic protection control system, characterized in that: include: A first detection unit, a second detection unit, a host computer and a flow regulating device; The first detection unit is used to detect the cathodic protection parameters of the first pipe section, and the second detection unit is used to detect the cathodic protection parameters of the second pipe section; the first pipe section and the second pipe section are connected via an insulating head, and the flow regulating device is connected in parallel to the insulating head; The current regulating device is used to detect the cross-current flowing through the insulating head and regulate the cross-current according to the cathodic protection parameters; The flow regulating device includes a discharge control module, a flow regulating control module and a cathodic protection parameter acquisition module; The drain control module includes a drain control circuit and a field effect transistor, which is used to monitor the forward voltage drop of the drain in real time. When the forward voltage drop is greater than a threshold, a driving voltage is used to drive the field effect transistor to conduct. After the field effect transistor is turned on, the forward current of the stray current can pass through the drain with high current and low voltage. When a reverse voltage drop occurs at both ends of the drain, the field effect transistor is turned off to achieve unidirectional conduction. The current regulation control module includes a current regulation control circuit and a field effect transistor. By detecting the millivolt voltage of the shunt, the current flowing through the current regulation device is monitored in real time. The millivolt voltage generated by the current on the shunt is amplified and compared with the given signal to obtain a difference. The difference is PID-regulated to generate a control voltage, which is used to drive the field effect transistor to regulate the current passing through. The cathodic protection parameter acquisition module is used to collect cathodic protection data and signal spectrum data of the detection point; The host computer is remotely connected to the flow regulating device for communication; the host computer is used to perform dynamic optimization of the signal sampling frequency.

2. A regional cathodic protection control system according to claim 1, characterized in that: The first detection unit includes a plurality of first detection devices, each of which is used to detect cathodic protection parameters at different detection points on the first pipe section.

3. A regional cathodic protection control system according to claim 1 or 2, characterized in that: The cathodic protection parameter includes at least one of a test strip current, a test strip power-off potential, and a test strip power-on potential.

4. A regional cathodic protection control system according to claim 1, characterized in that: The current regulation device also includes a multi-channel isolation energy collection module, an anti-theft and anti-disassembly module, a communication transmission module, a data processing module, a power management module and a monitoring module.

5. A regional cathodic protection control system according to claim 4, characterized in that: The host computer is further configured to receive the cathode protection parameters, determine a control instruction according to the cathode protection parameters, and send the control instruction to the current regulating device so that the current regulating device regulates the cross-over current flowing through the insulating head.

6. A regional cathodic protection control system according to claim 5, characterized in that: The host computer is also used for at least one of analyzing and judging the source of stray current interference and online anti-theft monitoring tasks.

7. A regional cathodic protection control system according to claim 6, characterized in that: The host computer is specifically used for: Obtaining the selected stray current sampling frequency; Sending the stray current sampling frequency to a target detection unit so that the target detection unit performs signal sampling according to the stray current sampling frequency; The target detection unit includes a first detection unit or a second detection unit; Receive spectrum analysis data uploaded by the target detection unit; the spectrum analysis data is obtained based on the signal sampling analysis.

8. The regional cathodic protection control system according to claim 6, characterized in that: The host computer is specifically used for: Collect signal spectrum characteristic data corresponding to various stray current sources and cathodic protection system failures; Establishing a spectrum feature database according to the signal spectrum feature data; The current stray current interference source is determined according to the spectrum feature database.

9. The regional cathodic protection control system according to claim 4, characterized in that: The anti-theft and anti-disassembly module includes a light sensing sensor, a vibration sensing sensor and a disassembly sensing jumper wire.

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