CN111158329A - Network configuration monitoring system based on OPC and MQTT - Google Patents
Network configuration monitoring system based on OPC and MQTT Download PDFInfo
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- CN111158329A CN111158329A CN202010040284.2A CN202010040284A CN111158329A CN 111158329 A CN111158329 A CN 111158329A CN 202010040284 A CN202010040284 A CN 202010040284A CN 111158329 A CN111158329 A CN 111158329A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/4186—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication by protocol, e.g. MAP, TOP
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/41855—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication by local area network [LAN], network structure
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2609—Process control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses an OPC and MQTT-based network configuration monitoring system, which comprises a field control system, a remote monitoring system and an MQTT server, wherein the field control system forwards industrial field data to the remote monitoring system through the MQTT server, and simultaneously the remote monitoring system sends control information of a user to the field control system through the MQTT server. The field control system consists of control equipment, an OPC server and an OPC client, wherein the OPC server is connected with the control equipment to read data, simultaneously the OPC server transmits the acquired data to the OPC client, and the OPC client converts the acquired data of the control equipment into an MQTT protocol format for forwarding. The remote monitoring system comprises a configuration subsystem and a user monitoring subsystem, wherein the configuration subsystem is responsible for the connection configuration of the field control system, and the user monitoring subsystem can inquire real-time data and historical data of the field control system and realize data-based fault diagnosis.
Description
Technical Field
The invention relates to the technical field of automatic monitoring and network configuration communication, in particular to a network configuration monitoring system based on OPC and MQTT.
Background
The traditional process control system is a one-to-one system, any upper computer monitoring software needs to develop a special driver when using certain hardware equipment, the process control based on the OPC technology can perfectly solve the problems, and any equipment can be used by any system only by providing one driver. Meanwhile, the invention combines the OPC technology and the network configuration, provides a uniform framework for remote monitoring in the field of industrial automation, and can complete the quick construction of a monitoring system by any control equipment under the framework.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a quick solution for an automatic monitoring system, which is used for establishing a uniform network configuration monitoring system framework aiming at control equipment of different manufacturers, so that a user can realize personalized customization according to the requirement.
The technical scheme is as follows: in order to achieve the purpose, the invention provides the following technical scheme:
a network configuration monitoring system based on OPC and MQTT comprises a field control system, a remote monitoring system and an MQTT server;
the field control system completes process control and data acquisition of an industrial field and uploads related data information to the remote monitoring system through the MQTT server;
the remote monitoring system comprises a configuration subsystem and a user monitoring subsystem, wherein the configuration subsystem is connected and configured by a configuration engineer on site, and a common user can inquire the state information of an industrial site and control the production process of the site through the user monitoring subsystem.
As an optimization: the field control system comprises control equipment, an OPC server and an OPC client;
the control equipment comprises various Programmable Logic Controllers (PLC) and DCS systems, and realizes process control and data acquisition of an industrial field;
the OPC server is connected with the control equipment, and reads data information of the control equipment by adopting a special protocol of the control equipment;
the OPC client is connected with the OPC server through a local area network, reads data information according to OPC UA specifications, converts the acquired data into an MQTT protocol format to wait for forwarding, and is connected with the MQTT server through an Ethernet for data interaction.
As an optimization: the configuration content of the configuration subsystem comprises that an OPC client is connected with a remote monitoring subsystem and the OPC client is connected with an OPC server, and the operation steps are as follows:
s1: the OPC client sends a request command REQ _ CONNECT for connecting the remote monitoring system to the configuration subsystem;
s2: the configuration subsystem receives the connection request command REQ _ CONNECT, confirms that the identity information of the OPC Client is legal, sends a connection confirmation reply command ACK _ CONNECT and distributes a unique identity identification number Client _ ID for the OPC Client;
s3: the configuration subsystem establishes a proprietary communication theme for different OPC clients, the theme is named by a Client _ ID, a configuration information sub-theme Client _ ID _ Config and a Data information sub-theme Client _ ID _ Data are established under the Client _ ID theme, wherein the connection configuration of the OPC clients is performed under the configuration information sub-theme Client _ ID _ Config, the Data information sub-theme Client _ ID _ Data is used for Data interaction between the OPC clients and the user monitoring subsystem, and the following configuration information is performed under the sub-theme Client _ ID _ Config;
s4: the method comprises the steps that an OPC client sends a REQ _ SERVER _ IP connecting request command to a configuration subsystem, and the IP address and the port number of an OPC SERVER of a field control system are obtained;
s5: the configuration subsystem receives a request command REQ _ SERVER _ IP of an OPC client, inquires the IP address and the port number of an OPC SERVER of the field control system, and sends a reply command ACK _ SERVER _ IP to the OPC client;
s6: and the OPC client receives the reply command ACK _ SERVER _ IP, connects with the target OPC SERVER, and replies a command ACK _ SERVER _ OK to the configuration subsystem after the connection is successful.
As an optimization: the user monitoring subsystem can inquire real-time data and historical data of an industrial field and realize a fault diagnosis function based on the data, and the data acquisition steps are as follows:
s1: the OPC Client reads the Data of the OPC server through OPC UA specification, and issues the Data to the sub-topic Client _ ID _ Data under the topic Client _ ID, and the user monitoring subsystem acquires the Data and establishes a Data dictionary;
s2: the user monitoring subsystem carries out monitoring interface design and displays the defined data variable on the monitoring interface;
s3: the user monitoring system implements a data-based fault diagnosis function.
Has the advantages that: the invention provides a unified framework for remote monitoring in the field of industrial automation, and any control equipment can complete the quick construction of a monitoring system under the framework, and the framework has the following specific beneficial effects:
1. the OPC technology is adopted to obtain the data of the control equipment, so that the obstacle of interoperability between the automation software and the hardware platform is eliminated;
2. the OPC technology and the MQTT technology are combined, the remote transmission of local data is realized, and the method can be used as a framework of a remote monitoring system in the automation field to realize rapid development;
3. the configuration scheme of the remote monitoring system to the field control system is realized, and the reliability of the system work can be ensured by adopting a mechanism of connection-confirmation for many times.
Drawings
FIG. 1 is a block diagram of a network configuration monitoring system according to the present invention;
in the figure: 1. a field control system; 2. a remote monitoring system; 3. an MQTT server; 4. a control device; 5. an OPC server; 6. an OPC client; 7. a configuration subsystem; 8. a user monitoring subsystem; 9. a configuration engineer; 10. a user monitoring interface;
FIG. 2 is a schematic diagram of an OPC server connection control apparatus according to the present invention;
FIG. 3 is a diagram of an OPC server data structure according to the present invention;
FIG. 4 is a schematic diagram of an OPC client configuration according to the present invention;
FIG. 5 is a schematic diagram of data interaction between an OPC client and a user monitoring subsystem according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the specification of the present invention, so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention is more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a network configuration monitoring system design based on OPC and MQTT comprises a field control system 1, a remote monitoring system 2 and an MQTT server 3. The field control system 1 completes process control and data acquisition of an industrial field and uploads related data information to the remote monitoring system 2 through the MQTT server 3; the remote monitoring system 1 comprises a configuration subsystem 7 and a user monitoring subsystem 8, the configuration subsystem 7 is connected and configured by a configuration engineer 9, and a common user can inquire the state information of an industrial field and control the production process of the field through the user monitoring subsystem 8.
Referring to fig. 1, the field control system 1 includes a control device 4, an OPC server 5, and an OPC client 6. The control equipment 4 comprises a Programmable Logic Controller (PLC), a DCS system and the like, and realizes process control and data acquisition of an industrial field. The OPC server 5 is connected with the control device 4, and data communication is carried out between the OPC server 5 and the control device 4 through a special protocol provided by a control device manufacturer. The OPC server 5 is connected with the OPC client 6 through a local area network, the connection configuration process is completed through a configuration subsystem 7, and the OPC server 5 and the client 6 carry out data communication according to OPC UA specifications.
Referring to fig. 2, the step of connecting the OPC server 5 to the control device 4 includes:
s1: creating a data channel, selecting a special protocol of the control equipment 4, selecting a port of a PC (personal computer) connected with the control equipment 4, configuring a communication rate, selecting a specific model of the control equipment 4, and completing the connection of the OPC server 5 and the control equipment 4;
s2: referring to fig. 3, the OPC server 5 creates a data group, creates a data node, requests data update;
s3: the control device 4 receives the data update request, and the OPC server 5 receives and updates the data.
Referring to fig. 1, the OPC client 6 is connected to the MQTT server 3 through the ethernet and communicates with the remote monitoring system 2, and the remote monitoring system 2 is divided into a configuration subsystem 7 and a user monitoring subsystem 8. Firstly, the steps of the configuration subsystem 2 for connecting and configuring the OPC client 6 include:
s1: the OPC client sends a request command REQ _ CONNECT for connecting the remote monitoring system to the configuration subsystem;
s2: the configuration subsystem receives the connection request command REQ _ CONNECT, confirms that the identity information of the OPC Client is legal, sends a connection confirmation reply command ACK _ CONNECT and distributes a unique identity identification number Client _ ID for the OPC Client;
s3: the configuration subsystem establishes a proprietary communication theme for different OPC clients, the theme is named by a Client _ ID, a configuration information sub-theme Client _ ID _ Config and a Data information sub-theme Client _ ID _ Data are established under the Client _ ID theme, wherein the connection configuration of the OPC clients is performed under the configuration information sub-theme Client _ ID _ Config, the Data information sub-theme Client _ ID _ Data is used for Data interaction between the OPC clients and the user monitoring subsystem, and the following configuration information is performed under the sub-theme Client _ ID _ Config;
s4: the method comprises the steps that an OPC client sends a REQ _ SERVER _ IP connecting request command to a configuration subsystem, and the IP address and the port number of an OPC SERVER of a field control system are obtained;
s5: the configuration subsystem receives a request command REQ _ SERVER _ IP of an OPC client, inquires the IP address and the port number of an OPC SERVER of the field control system, and sends a reply command ACK _ SERVER _ IP to the OPC client;
s6: the OPC client receives the reply command ACK _ SERVER _ IP, connects with the target OPC SERVER, and replies a command ACK _ SERVER _ OK to the configuration subsystem after the connection is successful;
referring to fig. 4, the specific configuration method of the configuration subsystem 7 for performing OPC client is as follows:
s1: the OPC client 6 issues a topic REQ _ CONNECT, the topic issue content being the initial ID of the OPC client 6: NTUEE;
s2: the configuration subsystem 7 subscribes to the theme REQ _ CONNECT, confirms the information of the OPC client 6 after receiving the content nteue, and issues the theme ACK _ CONNECT at the same time, where the issued content is a specific ID number of the OPC client, such as ntee _11621, and the ID number is a unique ID number of the OPC client 6.
S3: the OPC Client 6 subscribes a theme ACK _ CONNECT, receives a content NTUEE _11621, modifies an initial ID number to NTUEE _11621, releases a theme Client _ ID, and releases the content to a modified ID number NTUEE _ 11621;
s4: the configuration subsystem 7 subscribes to the theme _ ID, receives the content ntee _11621, confirms that the OPC Client has completed the connection with the remote monitoring system 2, and successfully allocates the ID to the OPC Client 6.
S5: the MQTT server establishes a theme NTUEE _11621 to which the OPC client 6 and the remote monitoring system 2 both need to subscribe. The data communication between the OPC client 6 with the ID number NTUEE _11621 and the remote monitoring system 2 is realized under the theme; sub-topics NTUEE _11621_ Config and NTUEE _11621_ Data are established under the topic NTUEE _11621, wherein the connection configuration of the OPC client 6 and the OPC server 5 is completed under the sub-topic NTUEE _11621_ Config, and the Data interaction of the OPC client 6 and the user monitoring subsystem 8 is completed under the sub-topic NTUEE _11621_ Data.
S6: the OPC client 6 issues an instruction REQ _ SERVER _ IP requesting connection to the OPC SERVER 5 at the sub-topic NTUEE _11621_ Config, and the configuration subsystem 6 queries the IP address and port number of the OPC SERVER 5 of the field control system 1 after receiving the REQ _ SERVER _ IP, and sends a reply instruction ACK _ SERVER _ IP to the OPC client 6;
s7: the OPC client receives ACK _ SERVER _ IP and completes the connection with the OPC SERVER 5 through the IP address and port number.
Referring to fig. 5, the user monitoring subsystem 8 and the OPC client implement Data interaction in the sub-topic NTUEE _11621_ Data.
Claims (4)
1. A network configuration monitoring system based on OPC and MQTT is characterized in that: the system comprises a field control system, a remote monitoring system and an MQTT server;
the field control system completes process control and data acquisition of an industrial field and uploads related data information to the remote monitoring system through the MQTT server;
the remote monitoring system comprises a configuration subsystem and a user monitoring subsystem, wherein the configuration subsystem is connected and configured by a configuration engineer, and a common user can inquire the state information of an industrial field and control the production process of the field through the user monitoring subsystem.
2. The OPC and MQTT based network configuration monitoring system of claim 1, wherein: the field control system comprises control equipment, an OPC server and an OPC client;
the control equipment comprises various Programmable Logic Controllers (PLC) and DCS systems, and realizes process control and data acquisition of an industrial field;
the OPC server is connected with the control equipment, and reads data information of the control equipment by adopting a special protocol of the control equipment;
the OPC client is connected with the OPC server through a local area network, reads data information according to OPC UA specifications, converts the acquired data into an MQTT protocol format to wait for forwarding, and is connected with the MQTT server through an Ethernet for data interaction.
3. The OPC and MQTT based network configuration monitoring system of claim 1, wherein: the configuration content of the configuration subsystem comprises that an OPC client is connected with a remote monitoring subsystem and the OPC client is connected with an OPC server, and the operation steps are as follows:
s1: the OPC client sends a request command REQ _ CONNECT for connecting the remote monitoring system to the configuration subsystem;
s2: the configuration subsystem receives the connection request command REQ _ CONNECT, confirms that the identity information of the OPC Client is legal, sends a connection confirmation reply command ACK _ CONNECT and distributes a unique identity identification number Client _ ID for the OPC Client;
s3: the configuration subsystem establishes a proprietary communication theme for different OPC clients, the theme is named by a Client _ ID, a configuration information sub-theme Client _ ID _ Config and a Data information sub-theme Client _ ID _ Data are established under the Client _ ID theme, wherein the connection configuration of the OPC clients is performed under the configuration information sub-theme Client _ ID _ Config, the Data information sub-theme Client _ ID _ Data is used for Data interaction between the OPC clients and the user monitoring subsystem, and the following configuration information is performed under the sub-theme Client _ ID _ Config;
s4: the method comprises the steps that an OPC client sends a REQ _ SERVER _ IP connecting request command to a configuration subsystem, and the IP address and the port number of an OPC SERVER of a field control system are obtained;
s5: the configuration subsystem receives a request command REQ _ SERVER _ IP of an OPC client, inquires the IP address and the port number of an OPC SERVER of the field control system, and sends a reply command ACK _ SERVER _ IP to the OPC client;
s6: and the OPC client receives the reply command ACK _ SERVER _ IP, connects with the target OPC SERVER, and replies a command ACK _ SERVER _ OK to the configuration subsystem after the connection is successful.
4. The OPC and MQTT based network configuration monitoring system of claim 1, wherein: the user monitoring subsystem can inquire real-time data and historical data of an industrial field and realize a fault diagnosis function based on the data, and the data acquisition steps are as follows:
s1: the OPC Client reads the Data of the OPC server through OPC UA specification, and issues the Data to the sub-topic Client _ ID _ Data under the topic Client _ ID, and the user monitoring subsystem acquires the Data and establishes a Data dictionary;
s2: the user monitoring subsystem carries out monitoring interface design and displays the defined data variable on the monitoring interface;
s3: the user monitoring system implements a data-based fault diagnosis function.
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| CN113315830A (en) * | 2021-05-26 | 2021-08-27 | 重庆高新技术产业研究院有限责任公司 | Data transmission method of data engineering machine for industrial internet |
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Application publication date: 20200515 |