CN112631218A - Universal OPC equipment acquisition control module and method - Google Patents
Universal OPC equipment acquisition control module and method Download PDFInfo
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- G—PHYSICS
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- 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] or 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] or 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] or computer integrated manufacturing [CIM] characterised by the network communication by protocol, e.g. MAP, TOP
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- G—PHYSICS
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- 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] or computer integrated manufacturing [CIM]
- G05B19/4188—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] or computer integrated manufacturing [CIM] characterised by CIM planning or realisation
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- 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]
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Abstract
The invention discloses a universal OPC device acquisition control module and a method, wherein the module comprises an OPC interface module which is connected and communicated with each OPC server, a device control module, a data management module and a data acquisition module which are connected and communicated with the OPC interface module, the device control module and the data acquisition module are also connected and communicated with the data management module, a configuration management tool, a MySQL database and a Redis database which are connected and communicated with the data management module, and the device control module, the MySQL database and the Redis database are connected and communicated with a Web platform. The module and the method disclosed by the invention design an OPC data item flexible configuration method and a batch management tool aiming at the data characteristics of sensors and equipment in a comprehensive pipe gallery, improve the working efficiency of field maintenance personnel, realize flexible management on OPC equipment and improve the engineering adaptability.
Description
Technical Field
The invention belongs to the field of operation and maintenance management and intelligent monitoring of a comprehensive pipe gallery, and particularly relates to a universal OPC (OLE for process control) equipment acquisition control module and method in the field.
Background
The utility tunnel is built underground in the city for concentrate on laying the large-scale public building body of municipal pipeline such as electric power, communication, radio and television, feedwater, the normal operation of utility tunnel does not leave intelligent control of piping lane and operation and maintenance management platform system. A large number of sensors and electromechanical devices are adopted in intelligent monitoring, such as sensors of temperature, humidity, oxygen content, liquid level, hydrogen sulfide, methane and the like, and monitoring devices of fans, water pumps, lighting, electronic well covers, infrared intrusion detection and the like. Most of these sensors and monitoring devices are integrated by PLC, and data communication is performed by an OPC (OLE for Process Control, an industrial Control data communication standard interface) protocol.
OPC technology refers to the establishment of a unified data access specification between an industrial control device and control software in order to establish an interface standard for communication between the industrial control system and an application. The OPC technology is widely applied to intelligent projects of comprehensive pipe galleries as an equipment interconnection technology. The monitoring software OPC apparatus generally performs secondary programming development by using a DLL (Dynamic Link Library, a Library including codes and data that can be used by a plurality of programs at the same time) provided by the OPC foundation, performs access operation on OPC data items to realize data communication, and stores read apparatus data in a database for access and display by a WEB platform.
The existing OPC equipment acquisition control module lacks flexible configuration management on OPC equipment, and software codes are frequently required to be modified when data access of new types of OPC equipment is required to be added, so that the development and maintenance cost of software is increased. The lack of encapsulation for the device control approach increases maintenance complexity when maintaining device control. A large number of sensors and equipment exist in the pipe gallery, batch entry management tools are lacked when the equipment is maintained, and the workload of field personnel is increased by a single-point modification entry mode. Most databases are adopted for data interaction, the updating delay of alarm data is long, and the real-time performance of the alarm data is not high.
Disclosure of Invention
The invention aims to provide a general OPC equipment acquisition control module and a method.
The invention adopts the following technical scheme:
a general OPC apparatus gathers the control module, its improved technical scheme is: the system comprises an OPC interface module which is connected and communicated with each OPC server, a device control module, a data management module and a data acquisition module which are connected and communicated with the OPC interface module, wherein the device control module and the data acquisition module are also connected and communicated with the data management module, a configuration management tool, a MySQL database and a Redis database which are connected and communicated with the data management module, and the device control module, the MySQL database and the Redis database are connected and communicated with a Web platform.
Furthermore, the data management module adopts a MySQL database to manage two types of data, one type is the configuration management of the OPC equipment and comprises a data item path, a name, a data type, an equipment control type and a redis key name of the OPC equipment, and the other type is the acquisition data access management and establishes the relationship between the OPC equipment and data, state and alarm data.
Furthermore, the data item path of the OPC equipment sequentially consists of a defense area, cabins, equipment and acquisition items, wherein each cabin establishes an OPCGroup for grouping and managing the defense area equipment; OPC data types comprise a switching value, an integer value, a floating point value and a character string value; carrying out self-adaptive processing in the acquisition control process; the control mode of the OPC equipment comprises high pulse, high and low level and floating point number assignment.
Further, the configuration management tool is designed based on a MySQL database of the data management module, and comprises a path, a name and a control method of the OPC equipment.
Further, the data acquisition module reads data update of the OPC equipment based on the OPC interface module, wherein the data update comprises timing reading and event reading, and the reading mode is a synchronous mode or an asynchronous mode; and the data management module stores the OPC equipment data read by the data acquisition module in MySQL and Redis modes according to the data mode of configuration management.
Further, the device control module receives a device control request sent by the Web platform, and based on the OPC interface module, controls the OPC device according to the OPC device configuration mode of the configuration management.
Further, the control of the OPC equipment comprises fan starting, liquid level alarm threshold setting and infrared invasion arming and disarming.
Further, the configuration of OPC equipment and the data transmission of the OPC equipment of the Web platform are carried out through a MySQL database, and dynamic alarm data and sensor data are buffered by a Redis database.
A general OPC apparatus acquisition control method uses the above module, and its improved technical scheme is, including the following steps:
the data acquisition process of the OPC equipment comprises the following steps: when the OPC interface module triggers a data updating event, the data acquisition module reads data, and the data management module performs data assignment on a defense area and OPC equipment according to the path, name and type of the read data and simultaneously stores the data in a corresponding MySQL database and a Redis database;
the control process of the OPC device comprises the following steps: after the device control module receives an OPC device control request sent by a Web platform, the data management module carries out configuration query according to the unique identifier of the OPC device and the identifier of a control item, the MySQL database queries the item attribute and the control mode corresponding to the OPC device, and then the OPC interface module is called to carry out corresponding OPC device control.
Further, the device control request sent by the Web platform is an Http request.
The invention has the beneficial effects that:
the module and the method disclosed by the invention design an OPC data item flexible configuration method and a batch management tool aiming at the data characteristics of sensors and equipment in a comprehensive pipe gallery, improve the working efficiency of field maintenance personnel, realize flexible management on OPC equipment, improve engineering adaptability, project reproducibility, maintainability and software expandability, reduce the complexity of field maintenance and expansion and reduce the software development and maintenance cost. Meanwhile, a MySQL database and Redis database cache coexistence mode is adopted between the module and the Web platform, so that the coupling between software modules is improved, the time delay of alarm data is reduced, and the real-time performance of the alarm data is improved.
Drawings
FIG. 1 is a block diagram showing the modules disclosed in embodiment 1 of the present invention;
FIG. 2(a) is a schematic flow chart of a data acquisition process in the method disclosed in embodiment 1 of the present invention;
FIG. 2(b) is a flow chart illustrating a control process in the method disclosed in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Embodiment 1, as shown in fig. 1, this embodiment discloses a general OPC device collection control module, which includes an OPC interface module connected and communicated with each OPC server, a device control module connected and communicated with the OPC interface module, a data management module, and a data collection module, where the device control module and the data collection module are further connected and communicated with the data management module, a configuration management tool connected and communicated with the data management module, a MySQL database, and a Redis database, and the device control module, the MySQL database, and the Redis database are connected and communicated with a Web platform.
In this embodiment, the OPC interface performs secondary development by using a DLL provided by an OPC foundation (the DLL is composed of a server software package and a client development software package, and completely encapsulates implementation details of the OPC technology and the COM technology), the OPC device acquisition control module performs data communication with the OPC server as the client of the OPC, performs enumeration of the OPC server, enumeration of OPC data items, attribute access and data access of the OPC data items by the secondary development, and establishes connection and bidirectional communication access with the OPC server.
The data management module adopts a MySQL database and mainly manages two types of data, one type is the configuration management of OPC equipment, and mainly comprises data item paths, names, data types, equipment control types and redis key name access of the OPC equipment so as to be used for the data acquisition module to acquire and the equipment control module to perform corresponding equipment control; and the other type is data acquisition and access management, and establishes the relationship between OPC equipment and data, state and alarm data so as to provide a Web platform for data access.
According to the data characteristics of equipment in the comprehensive pipe gallery, the data item path of the OPCItem sequentially consists of defense areas, cabins, equipment and acquisition items, wherein an OPCGroup is established in each cabin to perform grouping management on the defense area equipment; OPC data types comprise switching value, integer value, floating point value, character string value and the like; carrying out self-adaptive processing in the acquisition control process; the control mode of the OPC equipment comprises high pulse, high and low level, floating point number assignment and the like. If the fan is started, the dry contact is controlled in a high-pulse mode, the default state is 0, the OPC item needs to be set to be 1, and the OPC item is set to be 0 after 500 milliseconds of delay (the time can be configured and managed); for example, high and low level modes are adopted for arming and disarming of infrared invasion, wherein 1 needs to be set for a long time during arming control, and 0 needs to be set for a long time during disarming control; the liquid level alarm threshold value is set in a floating point assignment mode, and an alarm threshold value floating point number is assigned through an OPC (optical proximity correction) item. Through OPC configuration management, under the condition of not modifying program codes, all common OPC equipment in the existing pipe gallery is basically adapted, and the engineering applicability of software is effectively improved.
The configuration management tool is designed based on a MySQL database of the data management module, realizes the configuration of data items related to OPC equipment, mainly comprises the path, name, control method and the like of the OPC equipment, and has the functions of batch entry, batch modification and the like according to the equipment serial number rule of the comprehensive pipe rack.
The data acquisition module reads data update of the OPC equipment based on the OPC interface module, wherein the data update comprises timing reading and event reading, and the reading mode is a synchronous mode or an asynchronous mode, so that the stability and compatibility of the system are met to the greatest extent; and the data management module stores the OPC equipment data read by the data acquisition module in MySQL and Redis modes according to a configuration management data mode for the Web platform to access.
And the equipment control module receives an equipment control request sent by the Web platform, and controls the OPC equipment based on the OPC interface module according to the OPC equipment configuration mode of configuration management. The control of the OPC equipment comprises the operations of starting a fan, setting a liquid level alarm threshold value, arming and disarming infrared invasion and the like.
The MySQL + Redis is used as a medium for storing and buffering data, the configuration of OPC equipment and the data transmission of OPC equipment of the Web platform are carried out through a MySQL database, the dynamic alarm data and the sensor data are buffered by adopting a Redis database, and the data updating speed of the Web platform is improved.
The module disclosed by the embodiment is based on OPC + MySQL + Redis, meets the flexible configuration requirement of OPC equipment acquisition, improves the coupling between software modules and improves the real-time property of alarm data; aiming at the data characteristics of the comprehensive pipe gallery sensor and the equipment, the method for data access and equipment control is encapsulated, so that the compatibility, expandability and maintainability of software are greatly improved, and the software development and maintenance cost is reduced; the batch modifying and inputting tool designed aiming at the equipment types and the data attributes in the comprehensive pipe gallery greatly improves the working efficiency of field maintenance personnel.
In this embodiment, the configuration management parameters of the OPC apparatus are stored in MySQL, and if the MySQL database is not used, databases such as Oracle, PostgreSQL, and sql server may be used instead, or XML files may be used for management, so that the same application effect can be achieved.
The embodiment also discloses a general OPC device acquisition control method, which uses the module and comprises the following steps:
as shown in fig. 2(a), the data acquisition process of the OPC apparatus: when the OPC interface module triggers a data updating event, the data acquisition module reads data, and the data management module performs data assignment on a defense area and OPC equipment according to attributes and data such as a path, a name and a type of the read data and simultaneously stores the data into corresponding MySQL database and Redis database caches for the Web platform to access;
as shown in fig. 2(b), the control process of the OPC apparatus: after the device control module receives an OPC device control request sent by a Web platform, the data management module carries out configuration query according to the unique identifier of the OPC device and the identifier of a control item, the MySQL database queries the item attribute and the control mode corresponding to the OPC device, and then the OPC interface module is called to carry out corresponding OPC device control. The device control request sent by the Web platform is an Http request.
Claims (10)
1. A general OPC equipment acquisition control module which characterized in that: the system comprises an OPC interface module which is connected and communicated with each OPC server, a device control module, a data management module and a data acquisition module which are connected and communicated with the OPC interface module, wherein the device control module and the data acquisition module are also connected and communicated with the data management module, a configuration management tool, a MySQL database and a Redis database which are connected and communicated with the data management module, and the device control module, the MySQL database and the Redis database are connected and communicated with a Web platform.
2. The universal OPC device acquisition control module of claim 1 wherein: the data management module adopts a MySQL database to manage two types of data, one type is the configuration management of OPC equipment, including data item path, name, data type, equipment control type and redis key name of the OPC equipment, and the other type is the acquisition data access management to establish the relationship between the OPC equipment and data, state and alarm data.
3. The generic OPC device acquisition control module of claim 2 wherein: the data item path of the OPC equipment sequentially consists of a defense area, cabins, equipment and acquisition items, wherein each cabin establishes an OPCGroup for grouping and managing the defense area equipment; OPC data types comprise a switching value, an integer value, a floating point value and a character string value; carrying out self-adaptive processing in the acquisition control process; the control mode of the OPC equipment comprises high pulse, high and low level and floating point number assignment.
4. The generic OPC device acquisition control module of claim 2 wherein: the configuration management tool is designed based on a MySQL database of the data management module, and comprises a path, a name and a control method of OPC equipment.
5. The universal OPC device acquisition control module of claim 1 wherein: the data acquisition module reads data update of OPC equipment based on the OPC interface module, wherein the data update comprises timing reading and event reading, and the reading mode is a synchronous mode or an asynchronous mode; and the data management module stores the OPC equipment data read by the data acquisition module in MySQL and Redis modes according to the data mode of configuration management.
6. The universal OPC device acquisition control module of claim 1 wherein: and the equipment control module receives an equipment control request sent by the Web platform, and controls the OPC equipment based on the OPC interface module according to the OPC equipment configuration mode of configuration management.
7. The generic OPC device acquisition control module of claim 6, wherein: the control of the OPC equipment comprises the starting of a fan, the setting of a liquid level alarm threshold value and the arming and disarming of infrared invasion.
8. The universal OPC device acquisition control module of claim 1 wherein: the configuration of OPC equipment and the data transmission of the OPC equipment of a Web platform are carried out through a MySQL database, and dynamic alarm data and sensor data are buffered by adopting a Redis database.
9. A general OPC device acquisition control method using the module of claim 1, comprising the steps of:
the data acquisition process of the OPC equipment comprises the following steps: when the OPC interface module triggers a data updating event, the data acquisition module reads data, and the data management module performs data assignment on a defense area and OPC equipment according to the path, name and type of the read data and simultaneously stores the data in a corresponding MySQL database and a Redis database;
the control process of the OPC device comprises the following steps: after the device control module receives an OPC device control request sent by a Web platform, the data management module carries out configuration query according to the unique identifier of the OPC device and the identifier of a control item, the MySQL database queries the item attribute and the control mode corresponding to the OPC device, and then the OPC interface module is called to carry out corresponding OPC device control.
10. The universal OPC apparatus acquisition control method of claim 9, wherein: the device control request sent by the Web platform is an Http request.
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