CN107357272A - A kind of DCS mobile remote monitoring systems and method based on OPC UA - Google Patents
A kind of DCS mobile remote monitoring systems and method based on OPC UA Download PDFInfo
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- CN107357272A CN107357272A CN201710534959.7A CN201710534959A CN107357272A CN 107357272 A CN107357272 A CN 107357272A CN 201710534959 A CN201710534959 A CN 201710534959A CN 107357272 A CN107357272 A CN 107357272A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000012795 verification Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 5
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 238000012986 modification Methods 0.000 description 2
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- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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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] 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
- G05B19/41855—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] or 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
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31434—Zone supervisor, collects error signals from, and diagnoses different zone
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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]
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of DCS mobile remote monitoring systems and method based on OPC UA, system includes host computer, server and DCS control systems, described host computer is the mobile configuration software based on the exploitation of OPC UA specifications in Android platform, and the server is the opc server based on the exploitation of OPC UA specifications；Host computer is connected with server by the WIFI local area network wireless of factory, passes through OPC UA protocols；Server, by wired connection, communicates with DCS control systems according to driver.The present invention can allow monitoring personnel to check field data whenever and wherever possible, inexpensive, safe and reliable upgrading tradition DCS monitoring systems, complete high performance mobile remote monitoring, change traditional industrial monitoring pattern.
Description
Technical field
The present invention relates to industrial monitoring technical field, and in particular to a kind of DCS movement remote monitorings system based on OPC-UA
System.
Background technology
Industrial field devices are carried out concentration control by Distributed Control System (Distributed Control System, DCS)
The operations such as system, monitoring, record and alarm, the past is in order to realize that the data between the DCS of different process units and data acquisition are led to
Letter develops special communication interface routine, it is necessary to take a lot of time, and the appearance of OPC standards solves this problem.Supervising
Traditional monitoring software is primarily present problems with during control：1st, traditional DCS monitoring softwares are generally operated at PC end, existing
Field monitoring personnel needs to be fixed on to be carried out checking operation in Control Room, has no idea to liberate manpower.In addition, general industry scene is set
Standby to safeguard and debug the communication for generally requiring and relevant staff being realized with intercom, which increase the inconvenience safeguarded and debugged.
2nd, due to COM and DCOM technology of traditional OPC communication interfaces based on Microsoft, in remote access tradition OPC exist it is following some
Problem, first point is to be difficult to configure and have very long not configurable time-out time；Second point is due to only in Windows
OPC client in operating system can just communicate with opc server, and platform independence is poor.
OPC-UA birth is desirable to as all existing specifications based on COM, establishes one without losing any function
With the real substitute of performance, and the modeling ability of complication system and the system interface of platform independence can be described.At present
The continuous upgrading of mobile device, the raising of hardware configuration and network transfer speeds, the development of mobile monitor software are constantly accelerated to solve
Certainly the difficulty of problem above substantially reduces, a kind of convenient, inexpensive, safe and reliable mobile remote monitoring system of market in urgent need.
The content of the invention
It is an object of the present invention to provide it is a kind of it is easy to maintenance, flexibility is strong, monitoring performance is excellent, safe and reliable based on OPC-
UA DCS mobile remote monitoring systems and method.
To achieve the above object, following technical scheme is employed：The invention mainly comprises host computer, server, DCS controls
System three parts, the host computer be Android platform on based on OPC-UA specifications exploitation mobile configuration software, the service
Device is the opc server based on the exploitation of OPC-UA specifications；Host computer passes through OPC-UA protocols, the DCS controls with server
System processed is situ industrial control system, and server carries out wired connection with DCS control systems.
Further, described host computer includes searching server module, connection server module, browses address space mould
Block, subscribing module, data disaply moudle, the real-time performance graph module of drafting；The server includes connectivity verification module, address
Space module, monitored item module, data acquisition module；Host computer is connected with server by WIFI local area network wireless, server
Pass through wired connection with DCS control systems.
A kind of mobile long-distance monitoring method of the present invention, comprises the following steps：
Step 1, connection server is searched, server module is searched and effective server, Connection Service is searched by WIFI
Device module selects the server to be connected, and the information that Configuration network connection needs, connection request is sent, in server authentication；
Step 2, address space is browsed, an entrance section is transmitted to server by browsing address space module in host computer
Point, a node listing is then back to, needs recurrence to browse if without required node；
Step 3, monitored item is subscribed to, monitored item module sets attribute wound needed for monitored item according to selected node in server
Build monitored item, subscribing module sets to subscribe to association attributes and create and subscribed in host computer, then by monitored item be added in subscription when
When monitoring that item data changes, it is pushed to by subscribing in host computer；
Step 4, display data, real-time performance graph is drawn, data disaply moudle is drawn according to industry spot in host computer
Industrial flow chart, there is provided corresponding alternative events, data are updated real time reaction needs equipment to display interface, click, ejects
Curve display window, display data variation tendency.
Further, in step 1, described lookup server is that lookup server input one is registered in host computer
Server path, the server list included under current path is searched, partial information is shown to interface for users selection；
Described connectivity verification server comprises the following steps：
Step 1-1, the upper computer selecting server to be connected, configuration access mode, connection request is sent to server
Connectivity verification module；
Step 1-2, the connectivity verification module of server verified according to the access mode of host computer, if the verification passes
Then successful connection；Otherwise connection failure, connection is established from new.
Further, in step 2, described node is the key concept for forming address space, is derived from by base node,
For describing the physical equipment at scene, the reference between node and node forms OPC-UA address space；
The address space is an abstract concept, by bottom control device abstract into address space in OPC-UA
Node, integrated address space is exactly that the underlying device in industry spot is mapped in node set；
The described address space that browses comprises the following steps：
Step 2-1, browse the address space module that address space module browses the server currently connected；
Step 2-2, browse address space module selection Ingress node and browsed in server address space module, be current
Node returns to the list of the node of a connection, builds a tree-like hierarchical structure；
Step 2-3, browse address space module and enter from the root node of the tree hierarchy of structure, recurrence browses successively, obtains
Each nodal information in server is taken, is operated according to the actual requirements.
Further, in step 3, the monitored item of subscribing to is that one kind side of information is exchanged between server and client side
Formula, update the data to property performance period in this way；
The subscription monitored item comprises the following steps：
Step 3-1, subscribing module creates monitored item according to the nodal information for browsing address space acquisition, and sets prison
Depending on the attribute of item, including monitoring mode, sampling interval etc.；
Step 3-2, subscribing module creates a subscription, and defines the initial setting up of subscription, including the issue interval of subscription,
Useful life, maximum number of notifications of each notification message etc.；
The monitored item being created above is added to subscription by step 3-3, subscribing module, when monitored item monitors what data changed
When by subscribe to part be pushed to host computer；
Step 3-4, subscribing module editable or deletes some or multiple monitored items.
Further, in step 4, described display data, draw real-time performance graph and comprise the following steps：
Step 4-1, data disaply moudle draws the industrial flow chart of DCS control objects in host computer, there is provided industrial flow
Some necessary interactive click events in place in figure；
Step 4-2, data disaply moudle receive the data of subscribing module push, the data changed into required for host computer
Form, it is shown to according to interface requirements on host computer；
Step 4-3, monitoring personnel and host computer interact, it is necessary to some equipment that click data display module provides
Click event, recall real-time dynamic graph display module；
Step 4-4, real-time dynamic graph display module are drawn out using the data variation time as abscissa first, the number of data
It is worth the plane right-angle coordinate for ordinate, the numerical value after being changed in data disaply moudle is signed in plane right-angle coordinate,
Form the curve of a display data variation tendency.
Compared with prior art, the invention has the advantages that：Convenient, nothing is developed using OPC-UA technologies, host computer
The monitoring software of performance loss；Compatible traditional industry spot, seamless upgrade movement remote monitoring, is reduced into greatest extent
This；Platform is placed on field of mobile terminals, meets the trend for calculating mobile, the system is also applicable other industrial circles very much,
With extraordinary development and application prospect.
Brief description of the drawings
Fig. 1 is the system construction drawing of the present invention.
Fig. 2 is the system flow chart of the present invention.
Fig. 3 is the flow chart that address space is browsed in the present invention.
Fig. 4 is the flow chart that monitored item is subscribed in the present invention.
Drawing reference numeral：1- host computers, 2- servers, 11- lookups server module, 12- connection servers module, 13- are clear
Look at the real-time performance graph module of address space module, 14- subscribing modules, 15- data disaply moudles, 16-, 21- connectivity verification moulds
Block, 22- address spaces module, 23- monitored items module, 24- data acquisition modules, 3-DCS control systems.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
As shown in figure 1, present system includes：Host computer 1, server 2, host computer 1 are the mobile end of Android platform
End, such as mobile phone, flat board etc..Server 2 is to provide field data, integrated address space and the server for subscribing to monitored item.
Host computer 1 includes searching server module 11, connection server module 12, browses address space module 13, subscribes to
Module 14, data disaply moudle 15, real-time performance graph module 16；It is off the net in plant local to search server module 11, is led to
Cross WIFI and search server module；Connection server module 12 is attached checking according to server end configuration information；Browse ground
The address space that location space module 13 is used in browser server 2, find key node；The monitoring of the monitoring addition of subscribing module 14
, enable push；Subscribing module 14 is pushed the form that the data conversion to come receives into host computer and entered by data disaply moudle 15
Row displaying, and according to the change real-time update of propelling data；Real-time performance graph module is used for the number for checking particular monitored item
According to variation tendency.
Server 2 includes connectivity verification module 21, address space module 22, monitored item module 23, data acquisition module 24,
Connectivity verification module 21 and connection server module 12 coordinate, and check whether configuration information coincide, and verify whether that peace can be established
Full connection；Underlying device is abstracted into node by address space module 22, and the real equipment in industry spot is mapped into address sky
Between；Monitored item module 23 and subscribing module 14 coordinate, the monitored item generated according to key node and some surveillance attributes and addition
To subscription, when monitored data change, pushed to host computer；Data acquisition module 24 obtains DCS in industry spot and controlled
The data of system acquisition processed.
As shown in Fig. 2 a kind of mobile remote monitoring system, comprises the following steps：
The first step searches server, and host computer 1 and server 2 are under the LAN of factory, and host computer 1 passes through WIFI
Communicated with server 2, obtain the information required for host computer and server establishment escape way and session, including set safely
Put, lookup specification defined in OPC-UA specifications, the lookup server module 12 of host computer 1 needs input one registered
Server path.By server present in this traversal path current network and a server list is returned for host computer
Family selects.
Second step and connectivity verification server, the different security strategies set according to server end, the Connection Service of host computer 1
Device module 12 configures relevant information request connection, comprises the following steps that：
(1) the connection server module 12 of host computer 1 first determines to establish the different config options of connection from server 2.
(2) connectivity verification module 21 of the connection server module 12 of host computer 1 to server 2 sends one and opens safety
The request of passage, the request can choose whether to encrypt by safe mode, as displayed whether to carry out secure connection in Fig. 1；It is double
Side will establish the peace for exchanging special private information with server i.e. host computer 1 and server 2 for client after being verified
Full tunnel.Escape way has a life cycle, needs to re-establish after failure.
(3) host computer 1 creates session on the secure channel with server 2.
The session of (4) (3) steps is swashed to server 2 using preceding needing to send active session request by host computer 1
Session living.After all checkings are all successful, the connection of host computer 1 and server 2 is just established, and number of passes is crossed in server 2
Machine 1 is generalized according to can to have access to.
3rd step browses address space, and the institutional framework of address space is similar to the file in microsoft system in server 2
System is the same, node with the structure organization of this level together, one data entity of each node on behalf, substantial amounts of node
Connect one netted structure of composition each other.In traditional OPC specifications, address space is separate, such as has data storage
OPC-DA address spaces, handle the OPC-A＆E address spaces of alert event, Client browse is comparatively laborious, in server 2
Independent address space is integrated into unique address space by address space module 22.Host computer 1 browses address space module
13 transmit an Ingress node to the address space module 22 of server 2, and the then return of address space module 22 one connects
The list of node, as shown in figure 3, it is comprised the following steps that：
(1) address space is integrated, the address space module 22 in server 2 is mapped to the real equipment in industry spot
The set of node.The underlying device of industry spot is abstracted into a node by address space module 22, in address space module 22
In, link together, connect each other by reference between node, form a netted structure.
(2) start to browse, the address module 13 that browses in host computer 1 uses the address browsed in service browser server 2
Space module 22, the service of browsing need receive a start node, then to browse address space module 13 return a node
List, build tree hierarchy, if not having node in need, continue repeat this step.
(3) selecting needs node, and the address space module 13 that browses in host computer 1 obtains according to the browse operation of previous step
Each nodal information in server 2 in address space module, then according to the actual requirements, after selecting the node needed for user to carry out
Continuous operation.
4th step, subscribes to monitored item, and host computer 1 exchanges with the progress real time information of server 2 and needs to use subscription service, orders
Read and complete push function together with monitored item, monitored item is created in the monitored item module 23 in server 2, subscribed to by subscription mould
Block 14 creates in server 2, creates the node conduct that monitored item needs to use the 3rd step to browse the needs browsed in address space
The node being monitored in address space, monitored item module 23 are added in subscription after creating monitored item.Subscribing module 14 can be same
Some monitored item is deleted in the multiple monitored items of Shi Tianjia, modification, can be by ordering when the data of monitored item monitoring change
The service of readding is sent in host computer 1, as shown in figure 4, comprising the following steps that：
(1) monitored item is created, the monitored item module 23 in server 2 first determines whether the monitored item has been present, such as
Fruit, which exists, to be then directly entered in next step, is added to subscription；If it does not exist, then browse address space mould in host computer 1
Block 13 finds the node of needs, and sets the necessary configuration information of monitored item, including monitoring mode, sampling interval etc. create institute
The monitored item needed.
(2) create and subscribe to, the subscribing module 14 in host computer 1 creates a subscription, and defines the initial setting up of subscription, wraps
Include subscription issues interval, useful life, maximum number of notifications of each notification message etc., and subscribing module 14 can equally be deleted and ordered
Read list.
(3) it is added to subscription, subscribing module 14 creates subscription and monitored item module 23 creates monitored item afterwards by monitoring
Item is added to subscription, to monitor the node in address space module 22；Subscribing module 14 can add multiple monitored items, change certain
The configuration parameter of individual or multiple monitored items, including sampling time interval etc., some or multiple monitored items can also be deleted.
(4) message is sent, when the data monitored in monitored item module 23 change or alert event occur,
A notice can be produced, is sent in host computer 1, the time interval of sampling is grasped according to the time of setting when creating monitored item
Make, the time interval of push can also be issued according to the distribution subscription time in subscription.
5th step, display data, draw real-time performance graph, the data disaply moudle 15 in host computer 1 controls according to DCS
The control object of system draws required industrial flow chart in host computer 1, and is responsible for receive subscribing module 14
The form that data conversion needs into host computer 1, data Regeneration response in corresponding specific equipment, is facilitated into industrial flow chart
On-site supervision personnel debug and safeguarded.Data disaply moudle 15 provides the click event with user mutual, and on-site supervision personnel can
To select equipment of concern to click on ejection dynamic graph display window in data disaply moudle 15, performance graph window is by real-time
Performance graph module 16 is drawn.Real-time performance graph module 16 draws plane right-angle coordinate window in host computer 1, according to ordering
The issuing time for readding module 14 is abscissa, and ordinate is the numerical value received, and the reality of data is drawn in plane right-angle coordinate
When variation tendency.Comprise the following steps that：
(1) data disaply moudle 15 draws the industrial flow chart of DCS control objects in host computer 1, it is also necessary to provides industry
Some necessary click events in place, facilitate user mutual, such as to check the performance graph of some equipment, check in flow chart
Equipment introduction etc.；Industrial flow chart moves towards the equipment flowsheet of industry spot according to related request, including device category, material
Etc. being shown in host computer 1, equipment, line segments and the dynamic numerical value change update section of static state are distinguished in drawing process
Point.
(2) the monitoring item data received is passed through respective handling, including the operation such as type conversion by data disaply moudle 15
The data of host computer needs are transformed into, are then shown on the interface that the data disaply moudle 15 in (1) step is drawn, if held
The data conversion of the data of continuous change then repeat step (2), carries out data renewal and then updates interface.
(3) monitoring personnel is interacted with host computer, it is necessary to what the data disaply moudle 15 clicked in (1) step provided
The click event of some equipment, recall real-time dynamic graph display module 16.
Real-time dynamic graph display module 16 is drawn out using the data variation time as abscissa first, and the numerical value of data is vertical
The plane right-angle coordinate of coordinate, the numerical value after being changed in data disaply moudle 15 is signed in plane right-angle coordinate, formed
The curve of one display data variation tendency.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (7)
- A kind of 1. DCS mobile remote monitoring systems based on OPC-UA, mainly including host computer, server, DCS control systems three Part, it is characterised in that：The host computer be Android platform on based on OPC-UA specifications exploitation mobile configuration software, institute It is the opc server based on the exploitation of OPC-UA specifications to state server；Host computer and server are described by OPC-UA protocols DCS control systems are situ industrial control system, and server carries out wired connection with DCS control systems.
- A kind of 2. DCS mobile remote monitoring systems based on OPC-UA according to claim 1, it is characterised in that：It is described Host computer include searching server module, connection server module, browse address space module, subscribing module, data and show Module, draw real-time performance graph module；The server include connectivity verification module, address space module, monitored item module, Data acquisition module；Host computer is connected with server by WIFI local area network wireless, and server passes through wired with DCS control systems Connection.
- 3. one kind is based on mobile long-distance monitoring method according to claim 1, it is characterised in that methods described includes following step Suddenly：Step 1, connection server is searched, server module is searched and effective server, connection server mould is searched by WIFI Block selects the server to be connected, and the information that Configuration network connection needs, connection request is sent, in server authentication；Step 2, address space is browsed, an Ingress node is transmitted to server by browsing address space module in host computer, A node listing is then back to, needs recurrence to browse if without required node；Step 3, monitored item is subscribed to, monitored item module sets attribute needed for monitored item to create prison according to selected node in server Depending on item, in host computer, subscribing module, which is set, subscribes to association attributes establishment subscription, and then monitored item is added in subscription and works as monitoring When item data changes, it is pushed to by subscribing in host computer；Step 4, display data, real-time performance graph is drawn, data disaply moudle draws industry according to industry spot in host computer Flow chart, there is provided corresponding alternative events, data are updated real time reaction needs equipment to display interface, click, ejects curve Display window, display data variation tendency.
- A kind of 4. mobile long-distance monitoring method according to claim 3, it is characterised in that：In step 1, described lookup clothes It is engaged in device and inputs a registered server path, the server included under lookup current path to search server in host computer List, partial information is shown to interface for users selection；Described connectivity verification server comprises the following steps：Step 1-1, the upper computer selecting server to be connected, configuration access mode, send connection of the connection request to server Authentication module；Step 1-2, the connectivity verification module of server is verified according to the access mode of host computer, is then connected if the verification passes It is connected into work(；Otherwise connection failure, connection is established from new.
- A kind of 5. mobile long-distance monitoring method according to claim 3, it is characterised in that：In step 2, described node is The key concept of address space is formed, is derived from by base node, for describing the physical equipment at scene, between node and node Reference form OPC-UA address space；The address space is an abstract concept, by bottom control device abstract into the section in address space in OPC-UA Point, integrated address space are exactly that the underlying device in industry spot is mapped in node set；The described address space that browses comprises the following steps：Step 2-1, browse the address space module that address space module browses the server currently connected；Step 2-2, browse address space module selection Ingress node and browsed in server address space module, be present node The list of the node of a connection is returned, builds a tree-like hierarchical structure；Step 2-3, browse address space module and enter from the root node of the tree hierarchy of structure, recurrence browses successively, obtains clothes Each nodal information being engaged in device, is operated according to the actual requirements.
- A kind of 6. mobile long-distance monitoring method according to claim 3, it is characterised in that：It is described to subscribe to monitoring in step 3 Item is a kind of mode that information is exchanged between server and client side, is updated the data to property performance period in this way；The subscription monitored item comprises the following steps：Step 3-1, subscribing module creates monitored item according to the nodal information for browsing address space acquisition, and sets monitored item Attribute, including monitoring mode, sampling interval etc.；Step 3-2, subscribing module creates a subscription, and defines the initial setting up of subscription, including the issue interval of subscription, use Time limit, the maximum number of notifications etc. of each notification message；The monitored item being created above is added to subscription by step 3-3, subscribing module, when monitored item monitors that data change Host computer is pushed to by subscribing to part；Step 3-4, subscribing module editable or deletes some or multiple monitored items.
- A kind of 7. mobile long-distance monitoring method according to claim 3, it is characterised in that：In step 4, described display number According to drawing real-time performance graph and comprise the following steps：Step 4-1, data disaply moudle draws the industrial flow chart of DCS control objects in host computer, there is provided in industrial flow chart Some necessary interactive click events in place；Step 4-2, data disaply moudle receive the data of subscribing module push, the data lattice changed into required for host computer Formula, it is shown to according to interface requirements on host computer；Step 4-3, monitoring personnel is interacted with host computer, it is necessary to the click for some equipment that click data display module provides Event, recall real-time dynamic graph display module；Step 4-4, real-time dynamic graph display module are drawn out using the data variation time as abscissa first, and the numerical value of data is The plane right-angle coordinate of ordinate, the numerical value after being changed in data disaply moudle is signed in plane right-angle coordinate, formed The curve of one display data variation tendency.
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Cited By (6)
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| CN108183967A (en) * | 2018-01-16 | 2018-06-19 | 重庆邮电大学 | Suitable for the OPC UA publish/subscribe methods of IPv6 wireless sensor networks |
| CN109039738A (en) * | 2018-08-01 | 2018-12-18 | 北京广利核系统工程有限公司 | The configuration of the DCS network equipment and monitoring method, device, maintenance node and terminal |
| CN109765866A (en) * | 2019-01-25 | 2019-05-17 | 北京交通大学 | A kind of industrial network system and its data processing method based on OPC UA |
| US10812577B2 (en) | 2017-12-22 | 2020-10-20 | Prosys Opc Oy | Method, a system and a computer program product for dynamically scaling OPC UA server capacity |
| CN112286144A (en) * | 2019-07-24 | 2021-01-29 | 北京国电智深控制技术有限公司 | Configuration method and system and computer readable storage medium |
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