Gas pipeline data exchange method and system based on SCADA system

Abstract

The present invention discloses a gas pipeline data exchange method and system based on a SCADA system, and relates to the field of data processing technology. It is mainly used to solve the problem that the gas pipeline SCADA system has high processing pressure and low data interaction efficiency. It mainly includes searching for terminal sub-devices of the gas pipeline through the SCADA system, and obtaining the data monitoring target of the terminal sub-device; determining at least one sub-monitoring device according to the device transmission protocol, preset monitoring strategy and data monitoring target through the SCADA system, and sending the transmission protocol, data monitoring target and auxiliary monitoring strategy to the sub-monitoring device, and the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy; filtering the pipeline collected data based on the data monitoring target and the auxiliary monitoring strategy, and sending the filtered pipeline collected data to the SCADA system according to the transmission protocol; processing the pipeline collected data according to the key monitoring strategy through the SCADA system.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a gas pipeline data exchange method and system based on a SCADA system. Background Art

[0002] Supervisory Control And Data Acquisition (SCADA) is a computer-based DCS and power automation monitoring system. It has a wide range of applications, including data acquisition and monitoring control in the fields of power, metallurgy, petroleum, chemical industry, gas, railways, and process control. In order to ensure the safety of gas pipeline transportation, the SCADA system needs to acquire data from the acquisition equipment, control equipment and other terminals installed on the gas pipeline in real time, that is, to obtain data from each terminal through data exchange, so as to carry out accurate data acquisition control.

[0003] At present, when the existing SCADA system exchanges data between various terminals in gas pipelines and gas supply stations, it usually exchanges data directly based on the device names of all terminal data collected by the SCADA system after conversion according to the protocol. However, since the SCADA system needs to process the data in all gas pipelines and gas supply stations, it needs a lot of system processing space to convert according to different protocols and match and exchange with device names, which greatly increases the system processing pressure and affects the speed and efficiency of data interaction. Summary of the invention

[0004] In view of this, the present invention provides a gas pipeline data exchange method and system based on a SCADA system, the main purpose of which is to solve the problems of high system processing pressure and low data interaction efficiency in the existing gas pipeline data interaction process.

[0005] According to one aspect of the present invention, a method for exchanging gas pipeline data in a SCADA system is provided, comprising:

[0006] Searching for terminal sub-devices of at least one gas pipeline controlled by each gas station through the SCADA system, and obtaining data monitoring targets of the terminal sub-devices, wherein the data monitoring targets are used to represent targets for abnormal monitoring of the gas pipeline and targets for adjustment and control;

[0007] Determine at least one sub-monitoring device by the SCADA system according to the device transmission protocol, the preset monitoring strategy and the data monitoring target, and send the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device, wherein the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy;

[0008] When the sub-monitoring device receives the data exchange start instruction, it retrieves the pipeline collection data transmitted by each gas station, and screens the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, and sends the screened pipeline collection data to the SCADA system according to the transmission protocol;

[0009] The pipeline collected data is processed by the SCADA system according to the key monitoring strategy, and the monitoring instructions generated after the processing are sent to the gas station according to the transmission protocol to instruct the gas station to perform control.

[0010] Furthermore, the SCADA system is used to search for the terminal sub-devices of each gas station that controls at least one gas pipeline, and obtain the data monitoring targets of the terminal sub-devices, including:

[0011] Sending a local area network construction instruction to the gas station control device that has established a network connection through the SCADA system, wherein the local area network construction instruction carries different local area network identifiers and network construction requirement information;

[0012] After receiving the local area network construction instruction, the gas station control device parses the network construction demand information to obtain at least one of the number of network devices, the network device connection duration, the network connection protocol condition, and the network connection device status condition;

[0013] The gas station control device queries the matching terminal sub-device from the device information library according to at least one of the number of network devices, the connection duration of the network devices, the network connection protocol conditions, and the network connection device status conditions, and divides the local area network corresponding to the matching terminal sub-device according to the local area network identifier;

[0014] The data monitoring target matching the local area network is queried based on a preset network monitoring mapping relationship, wherein the preset network monitoring mapping relationship includes the corresponding relationship between different local area network identifiers and different terminal sub-devices, and different terminal sub-devices and different data monitoring targets.

[0015] Further, the determining of at least one sub-monitoring device according to the device transmission protocol, the preset monitoring strategy and the data monitoring target by the SCADA system includes:

[0016] Retrieving a device transmission protocol matching the terminal sub-device in the SCADA system, and obtaining a preset monitoring strategy matching the data monitoring target, wherein the preset monitoring strategy includes at least one of a time monitoring strategy, a gas index monitoring strategy, a device operation monitoring strategy, and a data transmission monitoring strategy for judging the data monitoring target;

[0017] The SCADA system matches the device transmission protocol, the preset monitoring strategy and the data monitoring target to determine the sub-monitoring device.

[0018] Further, the sending the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device includes:

[0019] The SCADA system instructs the sub-monitoring device to establish a local area network with the gas station control device and the terminal sub-device, and sends the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device.

[0020] Furthermore, before sending the transmission protocol, the data monitoring target, and the auxiliary monitoring strategy to the sub-monitoring device, the method further includes:

[0021] Retrieving, by the SCADA system, a strategy splitting node corresponding to the preset monitoring strategy, wherein the strategy splitting node is used to represent a node at which the preset monitoring strategy can be judged in the sub-monitoring device and the SCADA system respectively;

[0022] The preset monitoring strategy is split based on the split identifier of the strategy splitting node to obtain an auxiliary monitoring strategy and a key monitoring strategy.

[0023] Furthermore, when the sub-monitoring device receives the data exchange start instruction, retrieving the pipeline collection data transmitted by each gas station includes:

[0024] Instructing each of the gas station control devices to collect pipeline data from the terminal sub-devices through the sub-monitoring device according to the local area network, and retrieving the pipeline data after receiving the data interaction instruction;

[0025] The method further comprises:

[0026] The sub-monitoring device monitors and judges the pipeline collected data according to the auxiliary monitoring strategy, and sends a pipeline abnormality signal to the SCADA system when the pipeline collected data is judged to be abnormal data.

[0027] Furthermore, the SCADA system processes the pipeline collected data according to the key monitoring strategy, and sends the monitoring instructions generated after the processing to the gas station according to the transmission protocol, including:

[0028] When the SCADA system determines that the target pipeline corresponding to the pipeline collection data is abnormal according to the key monitoring strategy, it generates a monitoring instruction matching the key monitoring strategy and sends it to the gas station management and control equipment. The monitoring instruction includes inspection guidance information instructing gas station inspection personnel to conduct inspections.

[0029] According to another aspect of the present invention, a gas pipeline data exchange system based on a SCADA system is provided, comprising:

[0030] The SCADA system is used to search for terminal sub-devices of each gas station that control at least one gas pipeline, and obtain data monitoring targets of the terminal sub-devices, wherein the data monitoring targets are used to characterize targets for abnormal monitoring of the gas pipeline and targets for adjustment and control; determine at least one sub-monitoring device according to a device transmission protocol, a preset monitoring strategy, and the data monitoring target, and send the transmission protocol, the data monitoring target, and the auxiliary monitoring strategy to the sub-monitoring device, wherein the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy;

[0031] The sub-monitoring device is used to retrieve the pipeline collection data transmitted by each gas station after receiving the data exchange start instruction, and filter the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, and send the filtered pipeline collection data to the SCADA system according to the transmission protocol;

[0032] The SCADA system is further used to process the pipeline collected data after receiving the screened pipeline collected data according to the key monitoring strategy, and send the monitoring instructions generated after the processing to the gas station according to the transmission protocol to instruct the gas station to perform control;

[0033] The gas station is used to receive the monitoring instruction sent by the SCADA system and perform gas pipeline operation control according to the monitoring instruction;

[0034] The terminal sub-device is used to collect pipeline collection data of the gas pipeline and send the pipeline collection data to the gas station.

[0035] Furthermore, the gas station also includes a gas station control device, and the SCADA system is specifically used to send a local area network construction instruction to the gas station control device that has established a network connection, and the local area network construction instruction carries different local area network identifiers and network construction requirement information;

[0036] The gas station control device is specifically used to parse the network construction demand information after receiving the local area network construction instruction, and obtain at least one of the number of network devices, the network device connection duration, the network connection protocol conditions, and the network connection device status conditions; query matching terminal sub-devices from the device information library according to at least one of the number of network devices, the network device connection duration, the network connection protocol conditions, and the network connection device status conditions, and divide the local area network corresponding to the matching terminal sub-devices according to the local area network identifier; query the data monitoring target matching the local area network based on a preset network monitoring mapping relationship, and the preset network monitoring mapping relationship includes the correspondence between different local area network identifiers and different terminal sub-devices, and different terminal sub-devices and different data monitoring targets.

[0037] Furthermore, the SCADA system is specifically used to retrieve the device transmission protocol matching the terminal sub-device in the SCADA system, and obtain a preset monitoring strategy matching the data monitoring target, wherein the preset monitoring strategy includes at least one of a time monitoring strategy, a gas index monitoring strategy, an equipment operation monitoring strategy, and a data transmission monitoring strategy for judging the data monitoring target; the device transmission protocol, the preset monitoring strategy, and the data monitoring target are matched to determine the sub-monitoring device.

[0038] Furthermore, the SCADA system is specifically used to instruct the sub-monitoring device to establish a local area network with the gas station control device and the terminal sub-device, and send the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device.

[0039] Furthermore, the SCADA system is specifically used to retrieve a policy splitting node corresponding to the preset monitoring strategy, wherein the policy splitting node is used to characterize the node at which the preset monitoring strategy can be judged in the sub-monitoring device and the SCADA system respectively; the preset monitoring strategy is split based on the splitting identifier of the policy splitting node to obtain an auxiliary monitoring strategy and a key monitoring strategy.

[0040] Furthermore, the sub-monitoring device is specifically used to instruct each of the gas station control devices to collect pipeline collection data from the terminal sub-device according to the local area network, and to retrieve the pipeline collection data after receiving the data interaction instruction; and to monitor and judge the pipeline collection data according to the auxiliary monitoring strategy, and when the pipeline collection data is judged to be abnormal data, send a pipeline abnormality signal to the SCADA system.

[0041] Furthermore, the SCADA system is specifically used to generate a monitoring instruction matching the key monitoring strategy and send it to the gas station management and control equipment when the target pipeline corresponding to the pipeline collection data is determined to be abnormal according to the key monitoring strategy. The monitoring instruction includes inspection guidance information instructing gas station inspection personnel to conduct inspections.

[0042] By means of the above technical solution, the technical solution provided by the embodiment of the present invention has at least the following advantages:

[0043] The present invention provides a gas pipeline data exchange method and system based on a SCADA system. First, the terminal sub-devices of at least one gas pipeline controlled by each gas station are searched through the SCADA system, and the data monitoring target of the terminal sub-device is obtained, and the data monitoring target is used to characterize the target of abnormal monitoring and adjustment control of the gas pipeline; at least one sub-monitoring device is determined according to the device transmission protocol, the preset monitoring strategy and the data monitoring target through the SCADA system, and the transmission protocol, the data monitoring target and the auxiliary monitoring strategy are sent to the sub-monitoring device, and the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy; when the sub-monitoring device receives the data exchange start instruction, the pipeline collection data transmitted by each gas station is retrieved, and the pipeline collection data is screened based on the data monitoring target and the auxiliary monitoring strategy, and the screened pipeline collection data is sent to the SCADA system according to the transmission protocol; the pipeline collection data is processed according to the key monitoring strategy through the SCADA system, and the monitoring instruction generated after the processing is sent to the gas station according to the transmission protocol to instruct the gas station to control. Compared with the prior art, the embodiment of the present invention diverts the data interaction and monitoring judgment tasks of the pipeline collection data of the SCADA system through the configuration of sub-monitoring devices and auxiliary monitoring strategies, greatly reducing the data receiving and data processing volume of the SCADA system, and the operating resource consumption of the SCADA system server, thereby effectively reducing the operating pressure of the SCADA system server.

[0044] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0046] Figure 1 A flow chart of a gas pipeline data exchange method based on a SCADA system provided by an embodiment of the present invention is shown;

[0047] Figure 2 Another flow chart of a gas pipeline data exchange method based on a SCADA system provided by an embodiment of the present invention is shown;

[0048] Figure 3 A schematic diagram of a local area network structure of a sub-monitoring device provided in an embodiment of the present invention is shown;

[0049] Figure 4 A block diagram of a gas pipeline data exchange system based on a SCADA system provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0050] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0051] The embodiment of the present invention provides a gas pipeline data exchange method based on a SCADA system, such as Figure 1 As shown, the method includes:

[0052] 101. Search, through the SCADA system, the terminal sub-devices of each gas station that controls at least one gas pipeline, and obtain the data monitoring target of the terminal sub-devices.

[0053] In an embodiment of the present invention, the SCADA system is an intelligent system for data collection and monitoring of a gas pipeline system. The gas pipeline system includes several gas pipelines and several gas stations for zoning and segmenting the gas pipelines. The gas station is equipped with a gas station control device, and the gas pipeline is equipped with multiple terminal sub-devices. The terminal sub-device is used as the data acquisition end of the SCADA system to collect environmental data, gas pipeline operation data and gas transportation control data of the corresponding gas pipeline. The gas station control device is used to control the relevant operating parameters of the gas pipeline under the jurisdiction of the gas station. Among them, the terminal sub-device can be an operating data acquisition sensor, such as a temperature sensor, a humidity sensor, an electrochemical gas sensor, an optical gas sensor, a semiconductor gas sensor, a turbine flowmeter, a thermal gas mass flowmeter and an ultrasonic gas flow sensor. It can also be a sensor for monitoring the control quantity of the gas pipeline, for example, a sensor for monitoring the opening of a regulating valve such as a pressure regulating valve, a pressure reducing valve, a stop valve and a ball valve. The data monitoring target is used to characterize the target of abnormal monitoring of the gas pipeline and the target of adjustment control. When the terminal sub-device is a turbine flowmeter, the data monitoring target is the gas flow; when the terminal sub-device is a pressure regulating valve, the data monitoring target is the gas pipeline pressure adjustment value.

[0054] 102. Determine at least one sub-monitoring device according to the device transmission protocol, the preset monitoring strategy and the data monitoring target through the SCADA system, and send the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device.

[0055] In an embodiment of the present invention, the terminal sub-device can directly transmit data with the main server of the SCADA system, or it can be connected to the main server of the SCADA system via a sub-monitoring device. In the process of transmitting via the sub-monitoring device, the sub-monitoring device is equivalent to the sub-server of the main server of the SCADA system, and can judge the monitoring data of some non-critical gas pipelines or equipment with lower importance levels, and then transmit the judgment result to the server of the SCADA system. The strategy based on which the sub-monitoring device judges the monitoring data is an auxiliary monitoring strategy, wherein the monitoring auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy. The sub-monitoring device is a sub-processor that diverts the data reception and data processing tasks of the main server of the SCADA system. The connection relationship between the sub-monitoring device and the gas station can be divided according to the gas station area, according to the data monitoring project, according to the content of the data monitoring project required to judge the monitoring index, etc., which is not specifically limited in the embodiment of the present invention. In addition, there are differences in the transmission protocols used by different terminal sub-devices, resulting in not all sub-monitoring devices being able to communicate with any terminal sub-device. Therefore, it is necessary to determine the sub-monitoring device used to participate in data exchange from the sub-monitoring devices based on the device transmission protocol, preset monitoring strategy and data monitoring target of the terminal sub-device corresponding to the current data transmission requirement as matching conditions, and send the transmission protocol, data monitoring target and auxiliary monitoring strategy to the sub-monitoring device, so that the sub-monitoring device can perform data collection and data monitoring anomaly judgment based on the above information.

[0056] It should be noted that by configuring sub-monitoring devices between the SCADA system and the terminal sub-devices, and judging the abnormalities of gas pipeline operation based on the sub-monitoring devices according to the auxiliary monitoring strategy, the data processing volume of the SCADA system main server can be greatly reduced, and the monitoring data processing volume can be diverted, so that the system main server only consumes resources for key abnormal monitoring, thereby reducing the resource consumption of the SCADA system main server and ensuring the smooth operation of the SCADA system main server.

[0057] 103. When the sub-monitoring device receives the data exchange start instruction, it retrieves the pipeline collection data transmitted by each gas station, and filters the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, and sends the filtered pipeline collection data to the SCADA system according to the transmission protocol.

[0058] In the embodiment of the present invention, based on the configuration of the sub-monitoring device and the auxiliary monitoring strategy, some pipeline collection data is only used for the sub-monitoring device, and no longer needs to be transmitted to the SCADA system. The SCADA system only needs to receive the conclusion of the sub-monitoring device based on the analysis and judgment of this part of the pipeline collection data, and does not need to receive this part of the pipeline collection data. Therefore, after receiving the data exchange start instruction, it is necessary to filter the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, filter out the data that the sub-monitoring device can process by itself and does not need to be forwarded to the SCADA system, and forward the data that the sub-monitoring device cannot judge by itself and the data processing of the SCADA system to the SCADA system. Among them, the data exchange start instruction can be an instruction based on a preset time or event trigger, or it can be an instruction input by a user through a human-computer interaction device, and the embodiment of the present invention does not make specific limitations.

[0059] It should be noted that the pipeline collection data is screened based on the data monitoring target and the auxiliary monitoring strategy as screening conditions. Based on the auxiliary monitoring strategy, it can be determined which terminal sub-devices only need to use the collected data in the sub-monitoring device. Based on the relationship between the terminal sub-device and the data monitoring target, the data monitoring target that only needs to be used in the sub-monitoring device is determined. Then, according to the above data monitoring target, the pipeline collection data that needs to be transmitted to the SCADA system main server is screened from the pipeline collection data to achieve the screening of the pipeline collection data. By screening the pipeline collection data, the data reception and data storage volume of the SCADA system main server are greatly reduced. At the same time, the integrity of the data required for gas pipeline monitoring is ensured, thereby reducing the hardware resource consumption of the SCADA system main server.

[0060] 104. Process the pipeline collected data according to the key monitoring strategy through the SCADA system, and send the monitoring instructions generated after the processing to the gas station according to the transmission protocol to instruct the gas station to perform control.

[0061] In the embodiment of the present invention, the SCADA system has two paths to obtain the pipeline collection data collected by the terminal sub-device. One path is to obtain the filtered pipeline collection data through the sub-monitoring device, and the other path is to directly obtain the pipeline collection data required by its key monitoring strategy from the terminal sub-device. Among them, the pipeline collection data received from the sub-monitoring device, in addition to the original collection data, also includes the abnormal monitoring results after the sub-monitoring device judges based on the auxiliary monitoring strategy. Among them, the key monitoring strategy is another part of the preset monitoring strategy, which is mainly used to judge the monitoring status of key gas pipelines and key monitoring items during the gas pipeline monitoring process. For example, main pipeline flow, large flow pipeline pressure monitoring, etc. After the SCADA system processes the pipeline collection data based on the key monitoring strategy, it generates a monitoring instruction, which is used to instruct the control equipment in the gas station to control and adjust the corresponding pipeline operation status. The key monitoring strategy and the auxiliary monitoring strategy can be customized according to the gas pipeline control requirements of the actual application scenario, and the embodiment of the present invention does not make specific limitations.

[0062] In one embodiment of the present invention, for further explanation and limitation, as Figure 2 As shown, the steps of searching the terminal sub-device of each gas station for controlling at least one gas pipeline through the SCADA system and obtaining the data monitoring target of the terminal sub-device include:

[0063] 201. Send a local area network construction instruction to the gas station control equipment that has established a network connection through the SCADA system.

[0064] 202. After receiving the local area network construction instruction, the gas station control device parses the network construction demand information to obtain at least one of the number of network devices, network device connection duration, network connection protocol conditions, and network connection device status conditions.

[0065] 203. The gas station management and control device queries the matching terminal sub-device from the device information library according to at least one of the number of network devices, the connection duration of the network devices, the network connection protocol conditions, and the network connection device status conditions, and divides the local area network corresponding to the matching terminal sub-device according to the local area network identifier.

[0066] 204. Query a data monitoring target that matches the local area network based on a preset network monitoring mapping relationship.

[0067] In an embodiment of the present invention, when the SCADA system searches for terminal sub-devices, it is necessary to determine the network connection relationship between different terminal sub-devices based on the network construction demand information. Specifically, the query of the terminal sub-devices in the network is executed by the gas station control device, and the network construction demand information is indicated by the local area network construction instruction sent by the SCADA system to the gas station. Among them, the local area network construction instruction carries different local area network identifiers and network construction demand information. The local area network identifier is a unique identification identifier corresponding to each local area network (such as a network ID). The network construction demand information, that is, the pre-configured network connection relationship, can be a data table, which is used to express the network connection information between different terminal sub-devices and the gas station, specifically including at least one of the number of network devices, the connection duration of the network device, the network connection protocol conditions, and the network connection device status conditions. The number of network devices is the number of terminal sub-devices, the network device connection duration is the network connection duration between the terminal sub-device and the gas station, the network connection protocol condition is determined based on the supported protocol format of the terminal sub-device, and the network connection device status condition is the requirement for the operating status of the terminal sub-device when establishing a network connection, for example, when the terminal sub-device is in a normal operating state or is in an operating time period, a network connection is established. The gas station control device queries the terminal sub-device that matches the above-mentioned local area network demand information from the device information library, that is, completes the search for the terminal sub-device. The construction network demand information may include the construction demand information of multiple local area networks. Further, in order to determine the data monitoring target of each local area network, based on the terminal sub-devices connected to each local area network obtained by the search, the data monitoring target is matched from the preset network monitoring mapping relationship. Among them, the preset network monitoring mapping relationship includes the correspondence between different local area network identifiers and different terminal sub-devices, and different terminal sub-devices and different data monitoring targets. The terminal sub-device is identified according to the local area network identifier, and then the data monitoring target is identified according to the terminal sub-device.

[0068] It should be noted that the SCADA system sends local area network construction instructions to the gas station, and then the gas station management and control equipment searches for the terminal sub-devices, and the search tasks of the terminal sub-devices and data monitoring targets are handed over to the gas station for execution. This not only ensures the SCADA system's comprehensive control over the data interaction process, but also reduces the diversion of search tasks, thereby greatly reducing the operating pressure of the SCADA system.

[0069] In one embodiment of the present invention, for further explanation and limitation, the step of determining at least one sub-monitoring device by the SCADA system according to the device transmission protocol, the preset monitoring strategy and the data monitoring target includes:

[0070] Retrieving a device transmission protocol matching the terminal sub-device in the SCADA system, and obtaining a preset monitoring strategy matching the data monitoring target;

[0071] The SCADA system matches the device transmission protocol, the preset monitoring strategy and the data monitoring target to determine the sub-monitoring device.

[0072] In the embodiment of the present invention, in order to determine the sub-monitoring device, the device transmission protocol of the corresponding terminal sub-device and the preset monitoring strategy matching the data monitoring target of the terminal sub-device are retrieved. Among them, the preset monitoring strategy is configured in advance according to multiple monitoring scenarios of the terminal sub-device and the judgment process of the data monitoring target, including at least one of the time monitoring strategy, gas index monitoring strategy, equipment operation monitoring strategy, and data transmission monitoring strategy for judging the data monitoring target. Among them, the time monitoring strategy is the time strategy for data collection of different data monitoring targets. For example, the time monitoring strategy for data monitoring target A is continuous and uninterrupted data monitoring, the time monitoring strategy for data monitoring target B is to monitor the data within the historical time period according to the preset time point, and the time monitoring strategy for data monitoring target C is to start monitoring the data for a period of time in the future according to the preset time interval. The gas index monitoring strategy is a strategy for monitoring and judging different gas indicators based on which data monitoring targets. For example, the valve opening can be used to judge the gas pressure index, gas flow index, and pipeline safety index. Then, the judgment strategies of the gas pressure index, gas flow index, and pipeline safety index all need to include the valve opening as a data monitoring target. The data transmission monitoring strategy is a monitoring strategy for the operation status and operation data integrity of each gas pipeline and pipeline-related control equipment, for example, a monitoring strategy for determining the operation status of a ball valve, a monitoring strategy for determining whether there is a leak in a pipeline, etc. Then, the sub-monitoring devices are matched one by one according to the device transmission protocol, the preset monitoring strategy, and the data monitoring target. The specific matching strategy can be conditional screening. For example, when the device transmission protocol supported by a sub-monitoring device matches the terminal sub-device, the preset monitoring strategy can be executed, and the data monitoring target can be collected based on the matched terminal sub-device, then this sub-monitoring device is determined to be a sub-monitoring device that receives the data exchange start instruction; it can be a random match, that is, when multiple sub-monitoring devices meet the requirements, the sub-monitoring device is randomly selected according to the principle of a balanced number of corresponding terminal sub-devices; it can also be matched according to the preset sub-monitoring device and the preset relationship table of the device transmission protocol, the preset monitoring strategy, and the data monitoring target, which is not specifically limited in the embodiment of the present invention.

[0073] It should be noted that by determining the sub-monitoring device through the device transmission protocol, preset monitoring strategy and data monitoring target, it is possible to ensure the compatibility of the format transmitted from the sub-monitoring device to the device, the executable nature of the strategy and the collectability of the data. Multiple guards identify the sub-monitoring device, thereby ensuring that the sub-monitoring device used to receive and execute data exchange startup instructions can complete the monitoring tasks corresponding to the auxiliary monitoring strategy.

[0074] In one embodiment of the present invention, for further explanation and limitation, the step of sending the transmission protocol, the data monitoring target, and the auxiliary monitoring strategy to the sub-monitoring device includes:

[0075] The SCADA system instructs the sub-monitoring device to establish a local area network with the gas station control device and the terminal sub-device, and sends the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device.

[0076] In an embodiment of the present invention, the local area network establishment method between the sub-monitoring device and the terminal sub-device can be established according to the area where the gas station is located. For example, the data collected by the terminal sub-device of the gas station in area A is transmitted to the sub-monitoring device a, and the data collected by the terminal sub-device of the gas station in area B is transmitted to the sub-monitoring device b. The local area network can also be established according to the correlation of the data monitoring targets of the terminal sub-devices. For example, the sub-monitoring device c receives the data of all terminal sub-devices that collect environmental monitoring data, and the sub-monitoring device d receives the data of all terminal sub-devices that collect gas pressure monitoring data. The local area network can also be established according to the abnormality judgment requirements. For example, the sub-monitoring device e exchanges data with the terminal sub-device that collects related gas flow data, and the sub-monitoring device f exchanges data with the terminal sub-device that collects related gas leakage data. The corresponding relationship division method between different sub-monitoring devices and terminal sub-devices corresponds to the network connection structure between the sub-monitoring device and the terminal sub-device and the gas station control equipment, and the above-mentioned local area network establishment method can be used in parallel, as shown in the following example. Figure 3 As shown. That is to say, the sub-monitoring devices a to f in the above example can exist in the system at the same time. Different local area networks built based on different sub-monitoring systems can meet the gas pipeline monitoring needs of different dimensions, improve the flexibility of gas pipeline data processing, and meet the diversified monitoring needs in the gas pipeline monitoring process.

[0077] In one embodiment of the present invention, for further explanation and limitation, before sending the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device, the method further includes:

[0078] Retrieving the strategy splitting node corresponding to the preset monitoring strategy through the SCADA system;

[0079] The preset monitoring strategy is split based on the split identifier of the strategy splitting node to obtain an auxiliary monitoring strategy and a key monitoring strategy.

[0080] In the embodiment of the present invention, the strategy splitting node is used to represent the node at which the preset monitoring strategy can be judged in the sub-monitoring device and the SCADA system respectively.

[0081] In an embodiment of the present invention, the preset monitoring strategy is a monitoring strategy composed of at least two sub-strategies. For example, at a preset data collection time, the valve opening of a specified pressure reducing valve is obtained, and it is determined whether the valve opening is normal. This preset monitoring strategy can be split according to the time splitting node and the judgment condition node. The auxiliary monitoring strategy obtained by splitting is whether the valve opening of the specified pressure reducing valve can be obtained at the preset data collection time; the key monitoring strategy is to judge whether there is an abnormality in the current pressure reducing valve valve opening according to the preset pressure reducing valve valve opening threshold. The splitting identifier is used to indicate the keywords of each strategy after the splitting. The splitting identifier in the above example can be a time identifier and a pressure reducing valve opening identifier. For another example, when the pressure parameter of the current primary gas pipeline meets the first preset pressure threshold, and all the secondary gas pipelines associated with it meet the second preset pressure threshold, it is determined that the operating status of the current primary gas pipeline is normal. This preset monitoring strategy can be split according to the primary gas pipeline splitting node and the secondary gas pipeline splitting node. The auxiliary monitoring strategy obtained by splitting is to determine the pressure value of each secondary gas pipeline through the second preset pressure threshold; the key monitoring strategy is to determine the operating status of the current primary gas pipeline based on the pressure value judgment results of all secondary gas pipelines and the pressure parameters of the current primary gas pipeline.

[0082] In one embodiment of the present invention, for further explanation and limitation, the step of retrieving the pipeline collection data transmitted by each gas station after the sub-monitoring device receives the data exchange start instruction includes:

[0083] Instructing each of the gas station control devices to collect pipeline data from the terminal sub-devices through the sub-monitoring device according to the local area network, and retrieving the pipeline data after receiving the data interaction instruction;

[0084] The method further comprises:

[0085] The sub-monitoring device monitors and judges the pipeline collected data according to the auxiliary monitoring strategy, and sends a pipeline abnormality signal to the SCADA system when the pipeline collected data is judged to be abnormal data.

[0086] In an embodiment of the present invention, before receiving the data interaction instruction sent by the SCADA system, the sub-monitoring device can send a data collection instruction to the gas station control device in its local area network in advance, so that the gas station control device can collect pipeline data from the terminal sub-device within its control range or the designated terminal sub-device. The timing of issuing the instruction in advance can be a preset time interval, a preset time point, etc. By instructing the gas station control device to collect data in advance, the sub-monitoring devices can occupy network resources in a staggered manner, and at the same time, the response time of the data interaction instruction can be greatly shortened, thereby improving the data interaction efficiency.

[0087] It should be noted that, in addition to responding to data interaction instructions and transmitting pipeline collection data to the SCADA system, the sub-monitoring device is also used to monitor and judge the pipeline collection data according to the auxiliary monitoring strategy. If the result of the monitoring judgment is normal, the normal result can be stored for query and call of the SCADA system. If the result of the monitoring judgment is abnormal, a pipeline abnormality signal will be sent to the SCADA system so that the SCADA system can make further judgments, controls or interventions for the abnormal situation. By monitoring and judging the pipeline collection data through the sub-monitoring device, the amount of data received and processed by the SCADA system can be greatly reduced, and resource consumption can be reduced, thereby greatly reducing the operating pressure of the SCADA system.

[0088] In one embodiment of the present invention, for further explanation and limitation, the step of processing the pipeline collected data according to the key monitoring strategy by the SCADA system and sending the monitoring instructions generated after processing to the gas station according to the transmission protocol includes:

[0089] When the SCADA system determines that the target pipeline corresponding to the pipeline collection data is abnormal according to the key monitoring strategy, it generates a monitoring instruction matching the key monitoring strategy and sends it to the gas station management and control equipment.

[0090] In an embodiment of the present invention, the monitoring instruction includes inspection guidance information for instructing the gas station inspection personnel to conduct inspections. In the field of gas pipeline monitoring, gas stations are often equipped with multiple inspection personnel. The gas station control equipment is an interactive device in the gas station for displaying monitoring information and executing control instructions. When the SCADA system determines that the target pipeline is abnormal according to the key monitoring strategy, the abnormal location, abnormal cause, inspection focus and other information can be determined based on the pipeline collection data and the terminal sub-device that collects the abnormal data, and the above information can be packaged into inspection guidance information, and a monitoring instruction including the inspection guidance information is generated to instruct the inspection personnel in the gas station to conduct inspections according to the inspection guidance information.

[0091] The present invention provides a gas pipeline data exchange method based on a SCADA system. First, the terminal sub-devices of at least one gas pipeline controlled by each gas station are searched through the SCADA system, and the data monitoring target of the terminal sub-device is obtained, wherein the data monitoring target is used to characterize the target of abnormal monitoring and the target of adjusting and controlling the gas pipeline; at least one sub-monitoring device is determined through the SCADA system according to the device transmission protocol, the preset monitoring strategy and the data monitoring target, and the transmission protocol, the data monitoring target and the auxiliary monitoring strategy are sent to the sub-monitoring device, wherein the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy; when the sub-monitoring device receives the data exchange start instruction, the pipeline collection data transmitted by each gas station is retrieved, and the pipeline collection data is screened based on the data monitoring target and the auxiliary monitoring strategy, and the screened pipeline collection data is sent to the SCADA system according to the transmission protocol; the pipeline collection data is processed according to the key monitoring strategy through the SCADA system, and the monitoring instruction generated after the processing is sent to the gas station according to the transmission protocol to instruct the gas station to control. Compared with the prior art, the embodiment of the present invention diverts the data interaction and monitoring judgment tasks of the pipeline collection data of the SCADA system through the configuration of sub-monitoring devices and auxiliary monitoring strategies, greatly reducing the data receiving and data processing volume of the SCADA system, and the operating resource consumption of the SCADA system server, thereby effectively reducing the operating pressure of the SCADA system server.

[0092] Furthermore, as a response to the above Figure 1 The implementation of the method shown in the figure, the embodiment of the present invention provides a gas pipeline data exchange system based on the SCADA system, such as Figure 4 As shown, the system includes: a SCADA system 31, a terminal sub-device 32, a sub-monitoring device 33 and a gas station 34;

[0093] The SCADA system 31 is used to search for the terminal sub-device 32 of each gas station 34 that controls at least one gas pipeline, and obtain the data monitoring target of the terminal sub-device 32, wherein the data monitoring target is used to characterize the target of abnormal monitoring and adjustment control of the gas pipeline; determine at least one sub-monitoring device 33 according to the device transmission protocol, the preset monitoring strategy and the data monitoring target, and send the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device 33, wherein the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy;

[0094] The sub-monitoring device 33 is used to retrieve the pipeline collection data transmitted by each gas station 34 after receiving the data exchange start instruction, and filter the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, and send the filtered pipeline collection data to the SCADA system 31 according to the transmission protocol;

[0095] The SCADA system 31 is further used to process the pipeline collected data after receiving the screened data according to the key monitoring strategy, and send the monitoring instructions generated after the processing to the gas station 34 according to the transmission protocol to instruct the gas station 34 to perform control;

[0096] The gas station 34 is used to receive the monitoring instructions sent by the SCADA system 31 and perform gas pipeline operation control according to the monitoring instructions;

[0097] The terminal sub-device 32 is used to collect pipeline collection data of the gas pipeline and send the pipeline collection data to the gas station 34.

[0098] Furthermore, the gas station 34 also includes a gas station control device, and the SCADA system 31 is specifically used to send a local area network construction instruction to the gas station control device that has established a network connection, and the local area network construction instruction carries different local area network identifiers and network construction requirement information;

[0099] The gas station control device is specifically used to parse the network construction demand information after receiving the local area network construction instruction, and obtain at least one of the number of network devices, the network device connection duration, the network connection protocol conditions, and the network connection device status conditions; query the matching terminal sub-device 32 from the device information library according to at least one of the number of network devices, the network device connection duration, the network connection protocol conditions, and the network connection device status conditions, and divide the local area network corresponding to the matching terminal sub-device 32 according to the local area network identifier; query the data monitoring target matching the local area network based on the preset network monitoring mapping relationship, and the preset network monitoring mapping relationship includes the correspondence between different local area network identifiers and different terminal sub-devices 32, and different terminal sub-devices 32 and different data monitoring targets.

[0100] Furthermore, the SCADA system 31 is specifically used to retrieve the device transmission protocol matching the terminal sub-device 32 in the SCADA system 31, and obtain a preset monitoring strategy matching the data monitoring target, wherein the preset monitoring strategy includes at least one of a time monitoring strategy, a gas index monitoring strategy, an equipment operation monitoring strategy, and a data transmission monitoring strategy for judging the data monitoring target; the device transmission protocol, the preset monitoring strategy, and the data monitoring target are matched to determine the sub-monitoring device 33.

[0101] Furthermore, the SCADA system 31 is specifically used to instruct the sub-monitoring device 33 to establish a local area network with the gas station control device and the terminal sub-device 32, and send the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device 33.

[0102] Furthermore, the SCADA system 31 is also specifically used to retrieve the policy splitting node corresponding to the preset monitoring strategy, and the policy splitting node is used to characterize the nodes at which the preset monitoring strategy can be judged in the sub-monitoring device 33 and the SCADA system 31 respectively; the preset monitoring strategy is split based on the splitting identifier of the policy splitting node to obtain an auxiliary monitoring strategy and a key monitoring strategy.

[0103] Furthermore, the sub-monitoring device 33 is specifically used to instruct each gas station control device to collect pipeline collection data from the terminal sub-device 32 according to the local area network, and to retrieve the pipeline collection data after receiving the data interaction instruction; and to monitor and judge the pipeline collection data according to the auxiliary monitoring strategy, and when the pipeline collection data is judged to be abnormal data, send a pipeline abnormality signal to the SCADA system 31.

[0104] Furthermore, the SCADA system 31 is specifically used to generate a monitoring instruction matching the key monitoring strategy and send it to the gas station management and control equipment when the target pipeline corresponding to the pipeline collection data is determined to be abnormal according to the key monitoring strategy. The monitoring instruction includes operating parameters for operating the terminal sub-device 32.

[0105] The present invention provides a gas pipeline data exchange system based on a SCADA system, comprising a SCADA system, a terminal sub-device, a sub-monitoring device and a gas station; the SCADA system is used to search for the terminal sub-devices of each gas station that control at least one gas pipeline, and obtain the data monitoring target of the terminal sub-device, the data monitoring target is used to characterize the target of abnormal monitoring of the gas pipeline and the target of adjustment and control; at least one sub-monitoring device is determined according to the device transmission protocol, the preset monitoring strategy and the data monitoring target, and the transmission protocol, the data monitoring target and the auxiliary monitoring strategy are sent to the sub-monitoring device, the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy; the sub-monitoring device is used to receive the data After exchanging the start command, the pipeline collection data transmitted by each gas station is retrieved, and the pipeline collection data is screened based on the data monitoring target and the auxiliary monitoring strategy, and the screened pipeline collection data is sent to the SCADA system according to the transmission protocol; the SCADA system is also used to process the pipeline collection data according to the key monitoring strategy after receiving the pipeline collection data, and send the monitoring instructions generated after processing to the gas station according to the transmission protocol to instruct the gas station to control; the gas station is used to receive the monitoring instructions sent by the SCADA system, and perform gas pipeline operation control according to the monitoring instructions; the terminal sub-device is used to collect the pipeline collection data of the gas pipeline, and send the pipeline collection data to the gas station. Compared with the prior art, the embodiment of the present invention diverts the data interaction and monitoring judgment tasks of the pipeline collection data of the SCADA system through the configuration of the sub-monitoring device and the auxiliary monitoring strategy, greatly reducing the data receiving amount and data processing amount of the SCADA system, and the operating resource consumption of the SCADA system server, thereby effectively reducing the operating pressure of the SCADA system server.

[0106] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing system, they can be concentrated on a single computing system, or distributed on a network composed of multiple computing systems, and optionally, they can be implemented by a program code executable by a computing system, so that they can be stored in a storage system and executed by the computing system, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas pipeline data exchange method based on a SCADA system, characterized in that: include: Searching for terminal sub-devices of at least one gas pipeline controlled by each gas station through the SCADA system, and obtaining data monitoring targets of the terminal sub-devices, wherein the data monitoring targets are used to represent targets for abnormal monitoring of the gas pipeline and targets for adjustment and control; Determine at least one sub-monitoring device by the SCADA system according to the device transmission protocol, the preset monitoring strategy and the data monitoring target, and send the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device, wherein the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy; When the sub-monitoring device receives the data exchange start instruction, it retrieves the pipeline collection data transmitted by each gas station, and screens the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, and sends the screened pipeline collection data to the SCADA system according to the transmission protocol; The pipeline collected data is processed by the SCADA system according to the key monitoring strategy, and the monitoring instructions generated after the processing are sent to the gas station according to the transmission protocol to instruct the gas station to perform control.

2. The method according to claim 1, characterized in that: The monitoring target of searching for the terminal sub-device of each gas station controlling at least one gas pipeline through the SCADA system and obtaining the data of the terminal sub-device includes: Sending a local area network construction instruction to the gas station control device that has established a network connection through the SCADA system, wherein the local area network construction instruction carries different local area network identifiers and network construction requirement information; After receiving the local area network construction instruction, the gas station control device parses the network construction demand information to obtain at least one of the number of network devices, the network device connection duration, the network connection protocol condition, and the network connection device status condition; The gas station control device queries the matching terminal sub-device from the device information library according to at least one of the number of network devices, the connection duration of the network devices, the network connection protocol conditions, and the network connection device status conditions, and divides the local area network corresponding to the matching terminal sub-device according to the local area network identifier; The data monitoring target matching the local area network is queried based on a preset network monitoring mapping relationship, wherein the preset network monitoring mapping relationship includes the corresponding relationship between different local area network identifiers and different terminal sub-devices, and different terminal sub-devices and different data monitoring targets.

3. The method according to claim 2, characterized in that Determining at least one sub-monitoring device according to the device transmission protocol, the preset monitoring strategy and the data monitoring target through the SCADA system includes: Retrieving a device transmission protocol matching the terminal sub-device in the SCADA system, and obtaining a preset monitoring strategy matching the data monitoring target, wherein the preset monitoring strategy includes at least one of a time monitoring strategy, a gas index monitoring strategy, a device operation monitoring strategy, and a data transmission monitoring strategy for judging the data monitoring target; The SCADA system matches the device transmission protocol, the preset monitoring strategy and the data monitoring target to determine the sub-monitoring device.

4. The method according to claim 2, characterized in that: The sending the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device comprises: The SCADA system instructs the sub-monitoring device to establish a local area network with the gas station control device and the terminal sub-device, and sends the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device.

5. The method according to claim 4, characterized in that Before sending the transmission protocol, the data monitoring target and the auxiliary monitoring strategy to the sub-monitoring device, the method further includes: Retrieving, by the SCADA system, a strategy splitting node corresponding to the preset monitoring strategy, wherein the strategy splitting node is used to represent a node at which the preset monitoring strategy can be judged in the sub-monitoring device and the SCADA system respectively; The preset monitoring strategy is split based on the split identifier of the strategy splitting node to obtain an auxiliary monitoring strategy and a key monitoring strategy.

6. The method according to claim 5, characterized in that When the sub-monitoring device receives the data exchange start instruction, retrieving the pipeline collection data transmitted by each gas station includes: Instructing each of the gas station control devices to collect pipeline data from the terminal sub-devices through the sub-monitoring device according to the local area network, and retrieving the pipeline data after receiving the data interaction instruction; The method further comprises: The sub-monitoring device monitors and judges the pipeline collected data according to the auxiliary monitoring strategy, and sends a pipeline abnormality signal to the SCADA system when the pipeline collected data is judged to be abnormal data.

7. The method according to any one of claims 1 to 6, characterized in that: The processing of the pipeline collected data according to the key monitoring strategy by the SCADA system and sending the monitoring instructions generated after the processing to the gas station according to the transmission protocol includes: When the SCADA system determines that the target pipeline corresponding to the pipeline collection data is abnormal according to the key monitoring strategy, it generates a monitoring instruction matching the key monitoring strategy and sends it to the gas station management and control equipment. The monitoring instruction includes inspection guidance information instructing gas station inspection personnel to conduct inspections.

8. A gas pipeline data exchange system based on a SCADA system, characterized in that: The system includes: SCADA system, terminal sub-equipment, sub-monitoring equipment and gas station; The SCADA system is used to search for terminal sub-devices of each gas station that control at least one gas pipeline, and obtain data monitoring targets of the terminal sub-devices, wherein the data monitoring targets are used to characterize targets for abnormal monitoring of the gas pipeline and targets for adjustment and control; determine at least one sub-monitoring device according to a device transmission protocol, a preset monitoring strategy, and the data monitoring target, and send the transmission protocol, the data monitoring target, and the auxiliary monitoring strategy to the sub-monitoring device, wherein the auxiliary monitoring strategy is obtained by splitting based on the preset monitoring strategy; The sub-monitoring device is used to retrieve the pipeline collection data transmitted by each gas station after receiving the data exchange start instruction, and filter the pipeline collection data based on the data monitoring target and the auxiliary monitoring strategy, and send the filtered pipeline collection data to the SCADA system according to the transmission protocol; The SCADA system is further used to process the pipeline collected data according to the key monitoring strategy after receiving the pipeline collected data, and send the monitoring instructions generated after the processing to the gas station according to the transmission protocol to instruct the gas station to perform control; The gas station is used to receive the monitoring instruction sent by the SCADA system and perform gas pipeline operation control according to the monitoring instruction; The terminal sub-device is used to collect pipeline collection data of the gas pipeline and send the pipeline collection data to the gas station.

9. The switching system according to claim 8, characterized in that: The exchange system also includes gas station control equipment; The SCADA system is specifically used to send a local area network construction instruction to the gas station control equipment that has established a network connection, and the local area network construction instruction carries different local area network identifiers and network construction requirement information; The gas station control device is specifically used to parse the network construction demand information after receiving the local area network construction instruction, and obtain at least one of the number of network devices, the network device connection duration, the network connection protocol condition, and the network connection device status condition; query matching terminal sub-devices from the device information library according to at least one of the number of network devices, the network device connection duration, the network connection protocol condition, and the network connection device status condition, and divide the local area network corresponding to the matching terminal sub-device according to the local area network identifier; The data monitoring target matching the local area network is queried based on a preset network monitoring mapping relationship, wherein the preset network monitoring mapping relationship includes the corresponding relationship between different local area network identifiers and different terminal sub-devices, and different terminal sub-devices and different data monitoring targets.

10. The switching system according to claim 9, characterized in that: The SCADA system is further specifically used to retrieve the device transmission protocol matching the terminal sub-device in the SCADA system, and obtain a preset monitoring strategy matching the data monitoring target, wherein the preset monitoring strategy includes at least one of a time monitoring strategy for judging the data monitoring target, a gas index monitoring strategy, a device operation monitoring strategy, and a data transmission monitoring strategy; The device transmission protocol, the preset monitoring strategy and the data monitoring target are matched to determine the sub-monitoring device.

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