CN111935322A - Industrial internet control system and method based on PowerLink industrial protocol - Google Patents
Industrial internet control system and method based on PowerLink industrial protocol Download PDFInfo
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- CN111935322A CN111935322A CN202011082891.1A CN202011082891A CN111935322A CN 111935322 A CN111935322 A CN 111935322A CN 202011082891 A CN202011082891 A CN 202011082891A CN 111935322 A CN111935322 A CN 111935322A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H04L12/00—Data switching networks
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Abstract
The invention discloses an industrial internet control system based on a PowerLink industrial protocol, which comprises: PowerLink master station gateway, PowerLink slave station gateway and collection system, PowerLink master station gateway registers EDGEX platform, the interface that the cloud platform passes through the EDGEX platform carries out data acquisition to PowerLink master station gateway send instruction, PowerLink master station gateway is to PowerLink slave station gateway data acquisition, PowerLink slave station gateway passes through collection system data acquisition, and give PowerLink master station gateway with the data transmission who gathers, PowerLink master station gateway receives and analyzes data acquisition, data acquisition is through the conversion, data propelling movement after will converting for the cloud platform by PowerLink master station gateway through the interface of EDGEX platform.
Description
Technical Field
The invention relates to the technical field of industrial internet, in particular to an industrial internet control system and method based on a PowerLink industrial protocol.
Background
The traditional powerlink is used for collecting industrial data on an industrial field, some simple edge calculation is carried out on a gateway, historical data cannot be analyzed, the requirement of industrial development cannot be met, the industrial internet emphasizes that equipment, a production line and customers are closely connected and fused, a man-machine is finally connected through connection among intelligent machines, and big data analysis is carried out by combining software. Powerlink wants to realize cloud network integration, man-machine combination, artificial intelligence, still needs to solve the conversion to data, and the data uploads cloud platform and carries out big data analysis's problem.
Disclosure of Invention
In order to solve the defects of the prior art and achieve the purposes of data conversion by Powerlink and big data analysis by a data uploading cloud platform, the invention adopts the following technical scheme:
industrial Internet control system based on PowerLink industrial protocol includes: PowerLink master station gateway, PowerLink slave station gateway and collection system, PowerLink master station gateway register the EDGEX platform, the interface that the cloud platform passes through the EDGEX platform sends the instruction to PowerLink master station gateway and carries out data acquisition, PowerLink master station gateway passes through the PowerLink agreement and gathers data to PowerLink slave station gateway, PowerLink slave station gateway gathers data through collection system, and send the data of gathering for PowerLink master station gateway through the PowerLink agreement, PowerLink master station gateway receives and analyzes data collection, the conversion module of EDGEX platform converts the data collection after the analysis, PowerLink master station gateway gives the cloud platform with the propelling movement data after the conversion through the interface of EDGEX platform. The PowerLink industrial protocol is a two-layer protocol, the traditional PowerLink industrial protocol can only be used in a local area network, and after the PowerLink is registered to an EDGEX platform, PowerLink data can be uploaded to a cloud platform through an EDGEX framework, so that cloud computing and big data analysis are realized. Meanwhile, various micro-services provided by the EDGEX framework can be flexibly upgraded and replaced, the expandability is ensured, meanwhile, the system has industrial-level safety, stability and reliability, and the EDGEX framework also supports the use of a micro-server or a component plug-in of a higher version for integral replacement without changing the framework. The data acquisition device acquires data once according to 5000us of the operation cycle of the PowerLink and can acquire the data in real time according to the instruction sent by the cloud platform, so that the real-time performance of the data is guaranteed. The cloud platform can perform big data storage, aggregation, analysis, integration, optimization and mining on data of a plurality of systems.
The EDGEX platform comprises a control module, and the cloud platform issues a control command to the PowerLink master station gateway through the control module. The system can be controlled through big data analysis of the cloud platform, so that the system performance is improved, data analysis of industrial control is realized, and the defects that the current data is not shared and the calculation information is incomplete are overcome; the cloud platform can also send a message for inquiring the equipment information to the PowerLink master station through the control module, the PowerLink master station gateway can send the message to the PowerLink slave station gateway for inquiring in an asynchronous stage at the moment, and the inquiry result is pushed to the cloud platform and the edge computing module.
The EDGEX platform comprises a database and is used for storing the data converted by the conversion module, the cloud platform subscribes to the database, and once the database is updated, the data can be actively sent to the cloud platform. The real-time performance of the data is guaranteed, and resources are saved through a subscription mode.
The EDGEX platform comprises an edge computing module, the edge computing module can register with a database in advance, once the database has data to be updated, the edge computing module can actively report the data to the edge computing module, the edge computing module analyzes the data and issues a control command to a PowerLink master station through a control module, and early warning and regulation and control industrial operation are carried out, so that the effect of industrial control is achieved, and the real-time performance of control is guaranteed.
The database registration adopts a release subscription mode of a zeroMQ message middleware, the edge computing module calls an interface provided by the database to subscribe a Key value of data of the database in advance, and when the data of the Key value is triggered to be read and written, the database can actively release the data to a message queue for the edge computing module to apply.
The cloud platform comprises a big data analysis module and a cloud database, the cloud platform subscribes to the database of the EDGEX framework through an MQTT protocol, once the database is updated, data can be actively sent to the cloud database and the big data analysis module, and the big data analysis module issues a control command to the PowerLink master station gateway through the EDGEX platform. The cloud database ensures the safety, stability and reliability of data, resources are saved while the real-time performance of the data is ensured through a subscription mode, the big data analysis module can mine and analyze the data of a single system, can also be connected with a plurality of different systems for mining and analyzing, and the mining and analyzing of the big data are realized while the exclusivity of each system to the respective data is not influenced.
The industrial internet control method based on the PowerLink industrial protocol comprises the following steps:
s1, the PowerLink master station gateway registers to the EDGEX platform, and the cloud platform sends an instruction to the PowerLink master station gateway through an interface of the EDGEX platform to acquire data;
s2, the PowerLink master station gateway collects data from the PowerLink slave station gateway through a PowerLink protocol;
s3, the PowerLink slave station gateway collects data through a collection device and sends the collected data to the PowerLink master station gateway through a PowerLink protocol;
s4, the PowerLink master station gateway receives and analyzes the acquired data, and the conversion module of the EDGEX platform converts the analyzed acquired data;
and S5, the PowerLink master station gateway pushes the converted data to the cloud platform through the interface of the EDGEX platform.
The PowerLink industrial protocol is a two-layer protocol, the traditional PowerLink industrial protocol can only be used in a local area network, and after the PowerLink is registered to an EDGEX platform, PowerLink data can be uploaded to a cloud platform through an EDGEX framework, so that cloud computing and big data analysis are realized. Meanwhile, various micro-services provided by the EDGEX framework can be flexibly upgraded and replaced, the expandability is ensured, meanwhile, the system has industrial-level safety, stability and reliability, and the EDGEX framework also supports the use of a micro-server or a component plug-in of a higher version for integral replacement without changing the framework. The data acquisition device acquires data once according to 5000us of the operation cycle of the PowerLink and can acquire the data in real time according to the instruction sent by the cloud platform, so that the real-time performance of the data is guaranteed. The cloud platform can perform big data storage, aggregation, analysis, integration, optimization and mining on data of a plurality of systems.
The registration process comprises the following steps:
s11, using the protocol name and variable name of PowerLink as index value to register into EDGEX;
s12, the EDGEX finds a specific method corresponding to the PowerLink protocol stack according to the protocol name, the variable name and the read-write method name inquired in the command after receiving the cloud platform command;
and S13, calling a specific method to finish the read-write operation.
Setting a data dictionary to define an object and a data frame position corresponding to the object, setting a custom variable, linking the custom variable with the object, storing data acquired by the PowerLink slave station gateway into the custom variable, storing the custom variable into the data frame through the data dictionary to be transmitted in a message format, and obtaining the custom variable from a corresponding position in the data frame through the data dictionary by the PowerLink master station gateway and acquiring the acquired data. The object takes the user-defined variable space as a data area of the object, so that data interaction between the PowerLink protocol stack and the application program of the user is simple and efficient.
The invention has the advantages and beneficial effects that:
and uploading the PowerLink data to a cloud platform through an EDGEX frame to realize cloud computing and big data analysis. The EDGEX framework can flexibly upgrade and replace various micro-services, ensures expandability and simultaneously ensures that the system has industrial-level safety, stability and reliability, and also supports the integral replacement of a micro-server or a component plug-in unit with a higher version without changing the framework. The edge calculation module analyzes data and issues a control command to perform early warning and regulate and control industrial operation, so that the industrial control effect is achieved, and the real-time performance of control is guaranteed. The cloud platform can send instructions to be collected in real time, so that the real-time performance of data is guaranteed, and the data of a plurality of systems can be stored, gathered, analyzed, integrated, optimized and mined in a large data mode.
Drawings
Fig. 1 is an architecture diagram of an industrial internet control based on PowerLink industrial protocol according to the present invention.
Fig. 2 is an architecture diagram of a conventional PowerLink bus protocol for industrial control.
Fig. 3 is a data flow diagram of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 and 3, a set of tap water control system combines the PowerLink with the EDGEX framework, and includes a cloud platform, a PowerLink master gateway registered in the EDGEX framework, a PLC simulated by the PowerLink slave gateway, and a control object (a data acquisition device of each sensor).
In the registration process, the protocol name and the variable name of the PowerLink are used as index values to be registered in the EDGEX, the EDGEX can find a specific method corresponding to the PowerLink protocol stack according to the protocol name, the variable name and the read-write method name inquired in the command after receiving the cloud platform command, and then the inquiry and write-in operation can be completed by calling the method.
Firstly, the cloud platform is connected with the northbound interface of the EDGEX frame, and the command southbound interface provided by the EDGEX frame sends an instruction to the PowerLink master station gateway for data acquisition. And the PowerLink master station gateway acquires data from the PowerLink slave station gateway through a PowerLink protocol. The PowerLink slave station gateway collects data such as water level, water pressure, turbidity of water quality, temperature, PH and the like of a water plant through data collection devices such as various IO, sensors and the like. The data acquisition device acquires data once according to 5000us of the operation cycle of the PowerLink and can acquire the data in real time according to the instruction sent by the cloud platform, so that the real-time performance of the data is guaranteed.
After data acquisition, the PowerLink slave station gateway performs AD conversion on the acquired data, then encapsulates the data into an object corresponding to a PowerLink protocol message, and sends the object to the PowerLink master station gateway through a PowerLink bus protocol. After receiving the message, the PowerLink master station gateway corresponds the data analyzed from the corresponding object to the parameters according to the definition of the data dictionary, completes the analysis of the parameters, converts the EDGEX into the data in the EDGEX form and stores the data in the database of the EDGEX frame.
In the communication process of the PowerLink, data transmitted and received by each node is stored in object objects of the nodes, PowerLink design is carried out as the values of the object objects, a data dictionary is set, the data dictionary is a set of the object objects, the index values, the data types and the offset of the object objects are defined in advance, namely, defining the corresponding position of the object in the data frame, setting a custom variable, linking the custom variable with the object of the local data dictionary, the PowerLink protocol stack will collect the data, such as the water pressure parameter, is directly stored into the custom variable, the custom variable is directly put into the corresponding position of the object linked with the custom variable in the data frame, and sends out the data frame in message format, the object takes the user-defined variable space as its own data area, data interaction between the PowerLink protocol stack and the user's application is made simple and efficient. And the PowerLink master station gateway obtains the custom variable linked by the object from the corresponding position in the data frame through the definition of the data dictionary, and obtains the acquired data stored in the custom variable.
The PowerLink slave station gateway can periodically report real-time data of the industrial equipment, one period of the PowerLink comprises an isochronous synchronous stage, an asynchronous stage and an idle stage, and some non-real-time data can be updated in the asynchronous stage of the PowerLink and mainly comprise sending configuration commands, configuring network parameters, occasionally accessing equipment information of other nodes and the like.
Historical data of all parameters are stored in a database of the EDGEX frame, the edge computing module of the EDGEX frame can register with the database in advance, once the database has data to be updated, the data can be actively reported to the edge computing module, the edge computing module carries out data analysis through a machine learning algorithm, the current state and the future state of the data acquisition device are analyzed, early warning is carried out on future behaviors, timely control modules of the EDGEX frame are used for issuing commands to a PowerLink master station to adjust, engineering operation is regulated and controlled, the effect of industrial control is achieved, and the real-time performance of control is guaranteed. The edge calculation module registers to the database in a publish-subscribe mode of a zeroMQ message middleware, calls an interface provided by the database to subscribe a Key value of related data of the EDGEX database in advance, and if the Key value data is triggered to be read and written, the database can actively publish the data to a message queue for the edge calculation module to apply.
The PowerLink master station gateway can also push data converted by EDGEX data to a cloud platform through a RESTful interface provided by an EDGEX framework, an MQTT cloud server of the cloud platform stores the data into a cloud database, and the cloud platform stores, gathers, analyzes, integrates, optimizes and excavates the data, so that a control effect is achieved.
The cloud platform can also subscribe to a database of the EDGEX framework through an MQTT protocol, once the database has data to be updated, the data can be actively sent to the database of the cloud computing platform and the big data analysis module, and after the big data analysis module excavates the data, the control module of the EDGEX framework issues related control commands to the PowerLink master station gateway.
The cloud platform can also actively query, for example, the cloud platform can send a message for querying the device information to the PowerLink master station through the control module of the EDGEX frame, and the PowerLink master station gateway can send a message to the PowerLink slave station gateway at an asynchronous stage to query at this time, return a query result to the database of the EDGEX frame, and then push the query result to the cloud platform and the edge computing module.
As shown in fig. 2, the PowerLink industrial protocol is a two-layer protocol, the conventional PowerLink industrial protocol can only be used in a local area network, and after the PowerLink is registered in the EDGEX platform, the PowerLink data can be uploaded to the cloud platform through the EDGEX framework, so that cloud computing and big data analysis are realized. Meanwhile, various micro-services provided by the EDGEX framework can be flexibly upgraded and replaced, the expandability is ensured, meanwhile, the system has industrial-level safety, stability and reliability, and the EDGEX framework also supports the use of a micro-server or a component plug-in of a higher version for integral replacement without changing the framework. For example, the edge calculation module and the control module may perform edge calculation on data acquired by the PowerLink at an edge end and control on equipment connected to the PowerLink. For example, can do the control to the basin water pressure that the PowerLink is connected on edge gateway equipment, simultaneously at edge end analysis water pressure historical change trend, if the water pressure reaches the early warning value, pressure rising rate surpasss early warning rate simultaneously, then edge gateway can issue control command controlgear through the PowerLink and step down fast, avoid the basin because the too high accident such as explosion that leads to taking place of pressure, on the equipment data transmission cloud platform of connecting the PowerLink again through EDGEX, cloud platform can carry out big data analysis and data mining to the data of a plurality of water works, for example: the relation between the rising speed of the water temperature and the size of the water pool can be referred to the design of a new water plant.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. Industrial Internet control system based on PowerLink industrial protocol includes: PowerLink master station gateway, PowerLink slave station gateway and collection system, its characterized in that PowerLink master station gateway register to the EDGEX platform, the cloud platform passes through the interface of EDGEX platform and carries out data acquisition to PowerLink master station gateway send instruction, PowerLink master station gateway passes through the PowerLink agreement and gathers data to PowerLink slave station gateway, PowerLink slave station gateway gathers data through collection system, and send the data of gathering to PowerLink master station gateway through the PowerLink agreement, PowerLink master station gateway receives and analyzes the data collection, the collection data after the analysis are converted to the conversion module of EDGEX platform, PowerLink master station gateway passes through the interface of EDGEX platform and pushes away the data after the conversion for the cloud platform.
2. The PowerLink industrial protocol-based industrial Internet control system of claim 1, wherein the EDGEX platform comprises a control module, and the cloud platform issues control commands to the PowerLink master gateway through the control module.
3. The PowerLink industrial protocol-based industrial Internet control system of claim 2, wherein the EDGEX platform comprises a database for storing the data converted by the conversion module, the cloud platform subscribes to the database, and the data is actively sent to the cloud platform once the database has data updated.
4. The PowerLink industrial protocol-based industrial Internet control system of claim 3, wherein the EDGEX platform comprises an edge computing module, the edge computing module registers with the database in advance, once the database has data update, the edge computing module actively reports the data to the edge computing module, and the edge computing module analyzes the data and issues a control command to the PowerLink master station through the control module.
5. The PowerLink industrial protocol-based industrial Internet control system of claim 4, wherein the database registration is a publish-subscribe mode using zeroMQ message middleware, the edge computing module calls an interface provided by the database to subscribe to the Key value of the data in the database in advance, and when the Key value data triggers reading and writing, the database will actively publish the data in a message queue for the edge computing module to apply.
6. The PowerLink industrial protocol-based industrial Internet control system of claim 1, wherein the cloud platform comprises a big data analysis module and a cloud database, the cloud platform subscribes to the database of the EDGEX framework through the MQTT protocol, once the database has data updated, the cloud platform and the big data analysis module actively send data, and the big data analysis module issues a control command to the PowerLink master station gateway through the EDGEX platform.
7. The industrial internet control method based on the PowerLink industrial protocol is characterized by comprising the following steps of:
s1, the PowerLink master station gateway registers to the EDGEX platform, and the cloud platform sends an instruction to the PowerLink master station gateway through an interface of the EDGEX platform to acquire data;
s2, the PowerLink master station gateway collects data from the PowerLink slave station gateway through a PowerLink protocol;
s3, the PowerLink slave station gateway collects data through a collection device and sends the collected data to the PowerLink master station gateway through a PowerLink protocol;
s4, the PowerLink master station gateway receives and analyzes the acquired data, and the conversion module of the EDGEX platform converts the analyzed acquired data;
and S5, the PowerLink master station gateway pushes the converted data to the cloud platform through the interface of the EDGEX platform.
8. The PowerLink industrial protocol-based industrial internet control method of claim 7, wherein the registration process comprises the steps of:
s11, using the protocol name and variable name of PowerLink as index value to register into EDGEX;
s12, the EDGEX finds a specific method corresponding to the PowerLink protocol stack according to the protocol name, the variable name and the read-write method name inquired in the command after receiving the cloud platform command;
and S13, calling a specific method to finish the read-write operation.
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