CN212770975U - Underground oil and gas pipeline intelligent cathode protection monitoring system based on NB-IOT communication - Google Patents
Underground oil and gas pipeline intelligent cathode protection monitoring system based on NB-IOT communication Download PDFInfo
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Abstract
The utility model discloses a bury ground oil gas pipeline intelligence cathodic protection monitoring system based on NB-IOT communication relates to oil gas pipeline monitoring field, including data acquisition module, NB-IOT communication module, data center, remote monitoring terminal and comprehensive analysis module, wherein, data acquisition module passes through serial communication and is connected with NB-IOT communication module, NB-IOT communication module passes through wireless communication and is connected with data center, and data center passes through wireless network communication and is connected with remote monitoring terminal, and data center and remote control terminal synchronous data arrive comprehensive analysis module, the beneficial part of this invention lies in: the monitoring system can realize remote real-time monitoring in a large range, has a data backup function and can save manpower and material resources.
Description
Technical Field
The utility model relates to an oil gas pipeline monitoring field especially relates to bury ground oil gas pipeline intelligence cathodic protection monitoring system based on NB-IOT communication.
Background
The cathodic protection technology is a main technical means for controlling pipeline corrosion, and with the advance of digital, informatization and intelligent pipeline construction work, domestic oil and gas pipeline companies put forward new requirements on pipeline cathodic protection management work. On one hand, in the face of complex and variable pipeline environments, a real-time monitoring network is hoped to be formed, and the cathodic protection condition is comprehensively mastered; on the other hand, through processes such as real-time monitoring, data uploading, data analysis, standard and standard model calculation, pipeline problems are found in time, potential risks of the pipeline are handled, safe and stable operation of the pipeline is ensured, and further the pipeline management level is improved.
At present, the management of a pipeline cathode protection system by domestic oil and gas pipeline companies is basically carried out by adopting the flows of manual line patrol, manual acquisition, form filling, data entry, problem processing and the like, and the flows have the following problems:
1) the manual measurement has certain contingency, and the accuracy of the data is influenced by factors such as professional level of personnel, environment and the like;
2) the traditional acquisition mode has poor timeliness and can be completed only by depending on manual regular inspection, and the requirement for sudden detection cannot be met;
3) the manual data acquisition and management and application process is complicated, time and labor are wasted, the data standard and return mouth are not uniform, and the risk of data loss and unavailability exists;
in order to solve the problems, some enterprises develop an intelligent cathode protection monitoring system for buried oil and gas pipelines, and the basic structure of the intelligent cathode protection monitoring system is shown in figure 1. The system is developed based on a GPRS DTU communication module, the GPRS DTU communication module is composed of a communication processor and a wireless module, the whole DTU communication module takes an embedded real-time operating system as a software supporting platform, an RS485 interface is provided, parameter configuration is configured in advance, and configured parameters are stored in an internal FLASH memory. The automatic monitoring system has the following problems in the actual use process:
1) the coverage is insufficient: most pipelines are distributed in remote mountain areas or signal shielding areas, the GPRS DTU network gain effect is not obvious, and the GPRS DTU network gain method has no advantages in the arrangement of rural areas, plant areas and underground places;
2) the 'power supply' is particularly important in the cathodic protection intelligent monitoring process of the oil and gas pipeline, and directly determines the construction cost and the operation cost. Under the environment of 'energy conservation and efficiency improvement', the method is not economical and environment-friendly;
3) the link capability of the GPRS DTU is insufficient: if the same base station is used, compared with the traditional GPRS DTU, the NB-IOT improves the equipment access amount by 50-100 times, and has lower cost;
4) the existing pipeline cathode protection monitoring system does not have the control function of a potentiostat, adopts a test piece method to monitor the pipeline potential, lacks data comparison reference, and has certain deviation in data accuracy;
5) the data display and management are relatively single, the data integration analysis cannot be directly carried out on the data with a pipeline system, and the integrity analysis of the data is not realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the underground intelligent cathode protection monitoring system based on NB-IOT communication is designed.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
buried oil and gas pipeline intelligence cathodic protection monitoring system based on NB-IOT communication, this system includes: potentiostat, data acquisition module, NB-IOT communication module, data center, remote monitoring terminal and comprehensive analysis platform, wherein:
the data acquisition module includes: the monitoring module and the multifunctional testing pile are connected with the microcontroller through serial port communication, and the microcontroller is connected with the potentiostat through serial port communication;
the NB-IOT communication module is connected with the microcontroller through serial port communication and is connected with the data center through wireless communication;
the data center is connected with the remote monitoring terminal through wireless network communication.
Furthermore, the monitoring module comprises a polarization probe for electrifying potential, a long-acting copper sulfate reference electrode for monitoring the polarization potential of the pipeline, a test piece and a temperature and humidity probe sensor for monitoring the temperature and humidity of soil around the pipeline.
Further, the data center is composed of a server with a fixed IP address and a database, and is used for carrying out data management, data storage and data analysis on communication data of the whole system.
Further, the NB-IOT communication module is composed of a communication processor and a wireless module, serial ports are adopted to directly communicate with the microcontroller, information exchange is achieved through TCP and an application layer protocol HTTP, the remote monitoring terminal sends request data to the data acquisition module through the wireless module, then the wireless module receives the data from the data acquisition module, analyzes the data and sends results to the serial port device, the NB-IOT communication module converts original data on the serial ports into TCP/IP data packets, and the data acquired by the data acquisition module are sent to a server with a fixed IP address through the NB-IOT communication module.
Furthermore, the remote monitoring terminal is composed of an embedded real-time operating system and a GIS system, the whole remote monitoring terminal is integrated into configuration software, and the visualization of the position of the test pile and the visualization of the potential abnormality are realized by modifying the attribute of the control and calling the data of the database.
Further, the embedded real-time os includes task management, synchronization and communication mechanism between tasks and interrupts, memory management, interrupt management, file system, support for hardware and system migration, and in summary, the embedded system is responsible for allocation of all software and hardware resources, task scheduling, control, and coordination of concurrent activities.
Furthermore, the comprehensive analysis module supports the functions of comprehensive monitoring of cathode protection potential, overcast protection potential data overrun early warning, overcast protection potential monitoring alarm condition analysis and summarization, overcast protection equipment management, overcast protection monitoring early warning micro-communication small program end and the like, and is used for online detection, automatic transmission and intelligent analysis of pipeline cathode protection system data.
The beneficial effects of the utility model reside in that:
1) the NB-IOT communication module replaces the traditional GPRS DTU communication module, and the coverage area capacity is improved by 100 times in the range; the NB-IOT has lower power consumption than GPRS, a battery of the NB-IOT can be standby for 5-10 years without replacement, and meanwhile, the NB-IOT has stronger equipment linking capability and is more suitable for an intelligent monitoring scene for pipeline cathode protection;
2) the device has a potentiostat control function, can automatically control the potentiostat to enter an on-off test mode and automatically synchronize cathode protective pile acquisition equipment to perform depolarization process data acquisition, the whole data acquisition process is not less than 45s, the data sampling interval is not more than 5ms, and the truest outage point is obtained;
3) simultaneously supports two kinds of power-off potential monitoring of a test piece method and a cathode protection machine on-off gear;
4) the automatic fire extinguishing device has the functions of automatic temperature control and automatic fire extinguishing, the power supply is automatically cut off when the temperature exceeds the limit, and the inert gas is automatically released to fill the inner cavity of the pile body when the temperature of the equipment is higher than the fire danger level, so that the fire hazard is avoided;
5) the automatic acquisition and transformation of cathode protection data of the existing oil and gas pipeline are realized, and the online detection, the automatic transmission, the online fault diagnosis and the intelligent early warning analysis of the pipeline cathode protection system data are realized.
Drawings
FIG. 1 is a schematic diagram of the installation of an intelligent cathodic protection monitoring system for a buried oil and gas pipeline based on NB-IOT communication provided by the invention;
FIG. 2 is a data transmission diagram of the NB-IOT communication module of FIG. 1
FIG. 3 is a flow chart of the operation of the data center of FIG. 1;
fig. 4 is a block diagram of the integrated analysis module in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the intelligent cathodic protection monitoring system for buried oil and gas pipelines based on NB-IOT communication comprises: potentiostat, data acquisition module, NB-IOT communication module, data center, remote monitoring terminal and comprehensive analysis platform, wherein:
the data acquisition module includes: the monitoring module and the multifunctional testing pile are connected with the microcontroller through serial port communication, and the microcontroller is connected with the potentiostat through serial port communication;
the NB-IOT communication module is connected with the microcontroller through serial port communication and is connected with the data center through wireless communication;
the data center is connected with the remote monitoring terminal through wireless network communication.
The monitoring module comprises a polarization probe for electrifying potential, a long-acting copper sulfate reference electrode for monitoring the polarization potential of the pipeline, a test piece and a temperature and humidity probe sensor for monitoring the temperature and humidity of soil around the pipeline.
The data center is composed of a server with a fixed IP address and a database, and is used for carrying out data management, data storage and data analysis on communication data of the whole system.
The NB-IOT communication module is composed of a communication processor and a wireless module, serial ports are adopted to directly communicate with the microcontroller, information exchange is realized through TCP and an application layer protocol HTTP, a remote monitoring terminal sends request data to the data acquisition module through the wireless module, then the wireless module receives the data from the data acquisition module, analyzes the data and sends results to the serial port equipment, the NB-IOT communication module converts original data on the serial ports into TCP/IP data packets, and the data acquired by the data acquisition module is sent to a server with a fixed IP address through the NB-IOT communication module.
The remote monitoring terminal is composed of an embedded real-time operating system and a GIS system, the whole remote monitoring terminal is integrated into configuration software, and the visualization of the position of the test pile and the visualization of the potential abnormality are realized by modifying the attribute of a control and calling the data of a database.
The embedded real-time operating system comprises task management, a synchronization and communication mechanism between tasks and interrupts, memory management, interrupt management, a file system, support for hardware and system transplantation, and in short, the embedded system is responsible for the allocation of all software and hardware resources, task scheduling, control and coordination of concurrent activities.
The comprehensive analysis module supports the functions of comprehensive monitoring of cathode protection potential, overcast protection potential data overdue early warning, overcast protection potential monitoring alarm condition analysis and summary, overcast protection equipment management, overcast protection monitoring early warning micro-communication small program end and the like, and is used for online detection, automatic transmission and intelligent analysis of pipeline cathode protection system data.
1. Data acquisition module
The data acquisition module contains microcontroller, monitoring module and multi-functional test stake, and monitoring module and multi-functional test stake all are connected with microcontroller through serial communication, and microcontroller passes through serial communication and is connected with the potentiostat, and wherein the multi-functional test stake is reformed transform according to original design, can satisfy daily management, artifical the requirement of patrolling and examining, testing.
The data acquisition module is composed as shown in fig. 2, and is mainly used for acquiring parameters such as the electrifying potential, the polarization potential, the direct current, the alternating current interference current/voltage and the like of the pipeline and performing A/D conversion into digital signals in the intelligent potential acquisition device. And transmitting the data to a data center for analysis through the NB-IOT communication module. The data acquisition module has the function of synchronous interruption with the potentiostat, can automatically control the potentiostat to enter an on-off test mode and automatically synchronize the cathode protective pile acquisition equipment to perform depolarization process data acquisition, the whole data acquisition process is not less than 45s, and the data sampling interval is not more than 5 ms. The pure lithium battery power supply mode is adopted, and the single replacement interval is not less than 5 years. The system has the functions of interval acquisition, timing acquisition and triggering data acquisition. By adopting a low-power-consumption architecture design, the long-term operation of the solar energy water heater can be guaranteed without adding equipment such as commercial power or solar energy and the like when the power supply voltage DC is 5-12V. The equipment has a sleep function, and randomly enters a sleep mode after acquiring and uploading data according to preset parameters. The overall performance of the data acquisition module is as follows:
1) the collector potential can bear 15kV instantaneous (20 mu s) direct current high voltage and can work normally;
2) the service life of the acquisition sensor body is not less than 10 years;
3) the system has a real-time battery power monitoring function, and can send alarm information to the cloud platform when the power is too low;
4) the device has a real-time monitoring function of the temperature of the device, and can send alarm information to the cloud platform when the temperature is too high;
5) the automatic temperature control and automatic fire extinguishing function is provided, the power supply is automatically cut off when the temperature exceeds the limit, and the inert gas is automatically released to fill the inner cavity of the pile body when the temperature of the equipment is higher than the fire danger level, so that the fire hazard is avoided.
The controller of the data acquisition module is mainly used for realizing the electric potential acquisition between the NB-IOT communication module and the pipeline, simultaneously supporting two power-off electric potential acquisition controls of a test block method and a cathode protection machine on-off gear, and controlling the information exchange between the NB-IOT communication module and the potentiostat. The controller is connected with the NB-IOT communication module and the potentiostat through serial port communication respectively.
2. NB-IOT communication module
The NB-IOT communication module is an embedded terminal which uses an NB-IOT network for wireless data transmission and supports automatic conversion in three modes of linking, dormancy and PSM so as to realize extremely power consumption; and various network online modes such as always online, data awakening, low power consumption of PSM and the like are provided.
The NB-IOT communication module is connected with the controller through serial port communication and is connected with the data center through wireless communication.
The NB-IOT communication module is composed of a communication processor and a wireless module, serial ports are adopted to directly communicate with the MCU, and information exchange is realized through TCP and an application layer protocol HTTP. The terminal equipment sends request data to a specified COAP server through the module, and then the module receives the data from the COAP server, analyzes the data and sends the result to the serial port equipment. In the using process, data conversion between serial port data and a network data packet does not need to be concerned, and the data request of the serial port equipment to the COAP server can be realized only through simple parameter setting.
The whole NB-IOT communication module takes an embedded real-time operating system as a comprehensive monitoring support platform, and the data transmission process of the NB-IOT communication module is shown in FIG. 4. The NB-IOT communication module converts original data on the serial port into a TCP/IP data packet, and the acquired data are sent to a specified server address through an NB-IOT network, so that the function of remotely issuing parameters by a cloud server is achieved. And part of unused functions of the hardware dial switch with the acquisition function can be switched on and off through the hardware switch, so that the effects of further saving energy and reducing emission are achieved. Transmitted to the data center through the public carrier network, and the original data communication content is not required to be changed in the process. The whole NB-IOT communication module has the following functions:
1) device power consumption: the output current of the communication working mode battery is less than or equal to 200mA, and the output current of the standby working mode battery is less than or equal to 0.02 mA.
2) Data protection in case of communication abnormity: when the remote wireless communication is abnormal, the operation data can be automatically stored for more than 1 year, and the collected data is ensured not to be lost; after the long-distance wireless communication is recovered, the uploading instruction can be sent remotely,
3. data center
The operation flow of the data center is shown in fig. 4. The data center is composed of a server with a fixed IP address and a database, and is used for carrying out data management, data storage and data analysis on the communication data of the whole system and reacting on the comprehensive analysis result. When the pipeline potential is not in the effective protection potential range, the method comprises the following steps: when the voltage is between-0.85V and-1.2V, the system automatically assigns tasks to corresponding personnel.
The data center and the remote monitoring terminal realize data transmission, and the remote monitoring terminal can also call the related data stored in the data center according to requirements. And after receiving the pipeline data, the data center processes and analyzes the pipeline data, and the pipeline data is displayed by the remote monitoring terminal. The data query is carried out through the important fields of each type of form, the query condition is flexibly set, and the data query can be carried out on single or multiple information. The query result can generate corresponding curve and chart information, and statistical analysis can meet the requirement of analyzing and judging the operation condition of the pipeline cathode protection system. The query analysis report in the system provides various subjects, dimensions and graphic display modes for flexible use of users. The query result, the corresponding curve and the chart can be exported, and the exported file can be edited. The remote monitoring staff judges whether the pipeline given potential value needs to be adjusted according to the pipeline environment change condition, feeds the pipeline given potential value back to the NB-IOT communication module through the data center, and receives and controls the potentiostat to output effective protection voltage through the controller.
4. Remote monitoring terminal
The remote monitoring terminal is composed of an embedded real-time operating system and a GIS system.
The embedded real-time operating system is a management platform for realizing data monitoring and instruction sending by the monitoring terminal, is also an access entrance of the data center, logs in by using account numbers and passwords, adopts independent account numbers for each pipeline cathode protection site, carries out segmental monitoring and protection, and configures access authority for access aiming at users with different authorities. The main performance of the embedded system includes task management, synchronization and communication mechanism between tasks and interrupts, memory management, interrupt management, file system, support for hardware and system migration, and in summary, the embedded system is responsible for the allocation of all software and hardware resources, task scheduling, control and coordination of concurrent activities.
The GIS system visually presents the geographic distribution data of each test pile under the support of the test piles and operation software, and visual management needs to be based on map resources and is displayed in an off-line map or spatial data migration mode for ensuring data safety. The display content comprises the following contents:
1) pipeline basic information, monitoring information, historical records and the like;
2) cathodic protection system parameters, pile/board and other pipeline on-line and along-line facility position and attribute information;
3) corresponding detection, abnormity and inspection information;
4) other structured data.
The whole remote monitoring terminal is integrated into configuration software, and the visualization of the position of the test pile and the visualization of the potential abnormality are realized by modifying the attribute of the control and calling the data of the database. The business association among the visual monitoring state systems can realize functions of flow task allocation, work order issuing, expert processing and the like.
5. Comprehensive analysis module
The comprehensive analysis module supports the functions of real-time monitoring, data acquisition, statistical analysis, corrosion control management and the like of the pipeline cathode protection parameters, and the functions comprise the following steps:
1) the import of pipeline body data, cathode protection data, external detection data and pipeline management related information is supported;
2) providing a comprehensive monitoring function of the cathodic protection potential, supporting the summarizing and displaying of the potentiostat, the total number and abnormal number of cathodic protection test piles and the overrun number of the alarm potential according to the dimensions of time, pipe sections and the like, and supporting the manual access of collected data of the cathodic protection potential;
3) the cathode protection potential data overtime early warning function is provided, data such as the electrified potential, the test piece power-off potential and the polarization potential at a certain time in the latest time period of the cathode protection potential monitoring point are dynamically displayed, and the automatic early warning function is provided.
4) Providing a yin insurance potential monitoring alarm situation analyzing and summarizing function, and supporting the display of information such as alarm situation summarizing conditions, spatial distribution, disposal conditions, historical trends and the like in forms, statistical graphs, map distribution and other modes according to dimensions such as time, pipe sections and the like;
5) providing a cathode protection equipment management function, supporting the inquiry of cathode protection potential monitoring equipment according to pipelines, keywords and showing inquiry results in a table and map composite mode;
6) the method provides a yin-protection monitoring and early warning micro-message small program end, and supports basic information query, potential inspection data query, historical change trend query, polarization potential curve display and potential data overtime early warning query of yin-protection potential monitoring equipment.
7) Other functional requirements.
The comprehensive analysis module management function is shown in fig. 4, and mainly comprises functions of cathode protection potential comprehensive monitoring, cathode protection potential data overdue early warning, cathode protection potential monitoring alarm condition analysis and summarization, cathode protection equipment management, cathode protection monitoring early warning micro-signal small program end and the like, so that online detection, automatic transmission and intelligent analysis of pipeline cathode protection system data are realized, pipeline protection human resource configuration is optimized, data acquisition reliability is improved, and pipeline cathode protection management level is improved.
The invention provides an intelligent cathode protection monitoring system for a buried oil and gas pipeline based on NB-IOT communication, which consists of a cathode protection data acquisition module and a cathode protection data monitoring management system (software), wherein the cathode protection data acquisition module monitors the electrifying potential, the power-off potential, the natural potential, the alternating current and direct current interference potential and the soil temperature and humidity of the pipeline, and simultaneously locally stores the monitored data and uploads the data to the cathode protection data management system of a cloud server through a network. All the cathodic protection monitoring data on the pipeline are gathered to a cathodic protection station in a relay form formed by a chain structure formed by combining all the cathodic protection pile points on a single pipeline through a radio frequency module arranged in a collector, and finally all the data can be called by a production system through an internal network or a gateway in the cathodic protection station.
The system is constructed on the basis of an original artificial cathode protection test pile, a data acquisition module and a probe with a corresponding function are newly added on the basis of not damaging original pile body facilities and functions so as to realize an automatic monitoring function, a high-capacity lithium battery is arranged in a collector, a low-power-consumption core processor is adopted, regular data acquisition can be set and uploaded, then the collector enters a sleep mode, when sudden potential is abnormal, the collector can automatically wake up and acquire data and report the data, an integrated monitoring platform can learn and enter an emergency processing flow, continuous operation time can reach more than 5 years after single charging, a solar power supply system is not required to be additionally constructed, a Lora radio frequency transmission module can also be arranged in the device, a pipeline cathode protection test pile is subjected to chain networking through a radio frequency technology, and finally the pipeline cathode protection.
Therefore, the buried pipeline, the cathode protection equipment, the intelligent monitoring module, the data center, the remote monitoring terminal and the comprehensive analysis platform form a closed-loop adjusting system. The whole remote monitoring system supports multi-user use, and the whole design has more flexibility and superiority, and the main characteristics comprise the following:
1) the communication combination mode based on NB-IOT + LORA is more stable in transmission and more flexible in networking;
2) the low-power consumption hardware architecture design is adopted, a low-power consumption processor and a communication module are arranged in the system, external commercial power and solar power supply are not needed, and the cruising ability of 5 to 8 years can be realized by a built-in battery;
3) meanwhile, two kinds of power-off potential monitoring of a test piece method and a cathode protection machine on-off gear are supported, relevant industrial standards are met, collected parameters are more comprehensive, and measurement accuracy is higher;
4) the method explores the automatic acquisition and transformation of cathodic protection data of the existing oil and gas pipeline, and realizes the online detection, automatic transmission and intelligent analysis of the cathodic protection system data of the pipeline.
Through practical use tests, the underground oil and gas pipeline intelligent cathode protection monitoring system based on NB-IOT communication has the advantages of high timeliness, convenience in use, long service life, safety, reliability, clear data classification, safety of data, convenience in realizing remote transmission and centralized processing of cathode protection data and effectively improving the pipeline cathode protection level.
With the advent of the 5G era, namely the industrial Internet era, the NB-IOT based communication mode is bound to become the key of future industrial communication.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (7)
1. Underground oil and gas pipeline intelligence cathodic protection monitoring system based on NB-IOT communication, its characterized in that, this system includes: potentiostat, data acquisition module, NB-IOT communication module, data center, remote monitoring terminal and comprehensive analysis platform, wherein:
the data acquisition module includes: the monitoring module and the multifunctional testing pile are connected with the microcontroller through serial port communication, and the microcontroller is connected with the potentiostat through serial port communication;
the NB-IOT communication module is connected with the microcontroller through serial port communication and is connected with the data center through wireless communication;
the data center is connected with the remote monitoring terminal through wireless network communication.
2. The intelligent cathode protection monitoring system for the buried oil and gas pipeline based on NB-IOT communication as claimed in claim 1, wherein the monitoring module comprises a polarization probe for the energization potential, a long-acting copper sulfate reference electrode for monitoring the polarization potential of the pipeline, a test strip and a temperature and humidity probe sensor for monitoring the temperature and humidity of the soil around the pipeline.
3. The intelligent cathodic protection monitoring system for buried oil and gas pipelines based on NB-IOT communication as claimed in claim 1 is characterized in that the data center is composed of server with fixed IP address and database, and is used for data management, data storage and data analysis of the communication data of the whole system.
4. The underground oil and gas pipeline intelligent cathode protection monitoring system based on NB-IOT communication of claim 3, characterized in that NB-IOT communication module is composed of communication processor and wireless module, serial port and microcontroller are adopted to directly communicate, information exchange is realized by TCP and application layer protocol HTTP, remote monitoring terminal sends request data to data acquisition module through wireless module, then wireless module receives data from data acquisition module, analyzes data and sends result to serial port equipment, NB-IOT communication module converts original data on serial port into TCP/IP data packet, data acquired by data acquisition module is sent to server with fixed IP address through NB-IOT communication module.
5. The NB-IOT communication-based intelligent cathode protection monitoring system for buried oil and gas pipelines according to claim 1, wherein the remote monitoring terminal is composed of an embedded real-time operating system and a GIS system, the whole remote monitoring terminal is integrated into configuration software, and the visualization of the positions of the test piles and the visualization of potential abnormality are realized by modifying the attributes of controls and calling the data of a database.
6. An intelligent cathodic protection monitoring system for a buried oil and gas pipeline based on NB-IOT communication as claimed in claim 5 wherein the embedded real-time operating system comprises task management, synchronization and communication mechanism between tasks and interrupts, memory management, interrupt management, file system, support for hardware and system migration, in general the embedded system is responsible for the allocation of all software and hardware resources, task scheduling, control and coordination of concurrent activities.
7. The NB-IOT communication-based intelligent cathode protection monitoring system for buried oil and gas pipelines according to claim 1, wherein the comprehensive analysis module supports functions of comprehensive monitoring of cathode protection potential, early warning of overcast guaranteed potential data overrun, analysis and summarization of overcast guaranteed potential monitoring and alarm, management of overcast guaranteed equipment, and a small program end of overcast guaranteed monitoring and alarm, and is used for online detection, automatic transmission and intelligent analysis of pipeline cathode protection system data.
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| CN114214630A (en) * | 2021-10-28 | 2022-03-22 | 辽宁翔轩实业有限公司 | Intelligent temperature-sensing anti-corrosion pigging tracking comprehensive testing pile for oil and gas pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114214630A (en) * | 2021-10-28 | 2022-03-22 | 辽宁翔轩实业有限公司 | Intelligent temperature-sensing anti-corrosion pigging tracking comprehensive testing pile for oil and gas pipeline |
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