CN101271331A - Hierarchical real-time data mapping method of macrotype distributed control system - Google Patents
Hierarchical real-time data mapping method of macrotype distributed control system Download PDFInfo
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Abstract
The invention relates a method of real-time data organizing, communicating and the establishment of data base establishing for a large scale distributed control system (DCS), which comprises that data collection and measuring point calculation are realized at an I/O layer; the I/O layer defines a most primary real-time data organizing template according to different sorts and the data organizing template is as a minimum unit mapped by the data base of the DCS system; an I/O real-time data packet is communicated with a local controller (LDPU) layer; the real-time data packet of the LDPU is shared with other local controllers (LDPU) and a coordinating controller (HDPU) by controlling network communication directly; the real-time data base of the main station layer (HMI/SCADA) of the DCS system is mapped and generated directly by the real-time data packet of the LDPU layer so as to realize real-time data synchronization of the different nodes on the HMI/SCADA layer. The DCS system real-time data organizing method based on a hierarchical concept improves the speed of real-time information collecting, mining, conveying and application of the DCS system and enhances the control performance of the DCS system. Compared with a routine data organizing proposal which puts an I/O measuring point as a unit, the method has great superiority.
Description
Technical field
The present invention relates to the automatic field of industries such as large-size thermal power plant, oil, chemical industry, metallurgy, track traffic, relate in particular to the inside real time data tissue and the high-speed communication technology that are used for automated system.
Background technology
The a century in human history past is electric and a century of automatic technology practice, and the human progress that develops into of automatic technology has been done huge contribution, and dcs DCS becomes the basic control system that realizes a plurality of industrial trade factory automations.Along with the development of IT technology, field bus technique, the DCS technology of a new generation is changing the production run and the management mode of modern factories fast, and the scale of DCS system is also in fast development.One of the gordian technique that how to realize the DCS system of better performance is the high-speed real-time tissue and the intercommunication of DCS system.This technology of declaring is specifically designed to the tissue and the high-speed communication of the inside real time data of large-scale distributed DCS system.
Distributed automatic system (hereinafter to be referred as DCS) is the topmost control system of modern industry control, the DCS system is widely used in each industrial trade, comprise industries such as electric power, oil, chemical industry, metallurgy, papermaking, pharmacy, food, municipal administration, wherein the most complicated in the application of electric power and chemical industry, largest.The DCS system is made of the customization function of I/O module, fieldbus module, controller, HMI/SCADA, information integration technology, the communication technology, redundancy, different industries.It is 1～100,000 point that large-scale or ultra-large type DCS system counts.
Along with combining of modern industry and IT technology, the control scale of DCS system progressively enlarges, and comprises the sensor and the actuator of great amount of conventional I/O, field-bus interface gradually, and the supervisory system by the integrated branch works of communication interface.On the other hand, the DCS system is distribution more and more, hardware such as I/O are progressively transferred to the scene, be in the same place with the sensor, the actuator that are positioned at the scene, controller layer also more and more disperses, the physical distribution of The whole control system is in radius is the scope of hundreds of rice or several kilometers, and communication is the gordian technique of DCS system reliably at a high speed.
Along with the raising of modern industry manufacture level, the control real-time of DCS system is more and more higher, and the control of level develops into the control of 100ms level from second, at present to the control development of 10ms level.For the large-scale control system of several ten thousand scales, the control real-time of 10ms level requires the inside real time data of whole DCS to calculate, organize, communicate by letter must want high efficient and speed.
Summary of the invention
The present invention relates to a kind of large scale distributed control system DCS real time data tissue, communicate by letter and set up the method and the technology of mapping database from bottom to top.The DCS system comprises main website layer (HMI/SCADA), tuning controller (HDPU) and field controller (LDPU) and the I/O layer that comprises field bus device.Real time data tissue and mapping techniques relate to the database of main website layer, controller layer and I/O layer to be set up and data communication, and wherein communicating by letter of field controller and I/O layer adopted fieldbus networks; The communication of controller layer comprises between tuning controller and the field controller, the communication between field controller and the field controller adopts the field control network; Communicate by letter between main website layer and the tuning controller and adopt supervising the network.
The key of real time data mapping techniques is to set up the hierarchical real-time data organization scheme; Data acquisition, calculating, excavation realize at the I/O layer, and the I/O layer is according to the most basic real time data tissue templates of variety classes definition, as the minimum unit of the Database Mapping of DCS system; I/O real time data packet communication is given field controller (LDPU) layer, and LDPU does not unpack the real-time data base directly into LDPU, and LDPU sets up the empty measuring point template base of self, also participates in the foundation of upper level database as the Database Mapping unit of LDPU layer; The real time data bag of LDPU is directly shared by Control Network communication and other field controller (LDPU), tuning controller (HDPU), and HDPU does not unpack the total data that can obtain whole LDPU, has obtained the real time data of whole I/O simultaneously; The main website layer (HMI/SCADA) of DCS system directly obtains the real time data of tuning controller (HDPU) through supervising the network (O-NET), does not unpack directly into real-time data base, realizes that simultaneously the real time data of the different node of HMI/SCADA layer is synchronous.
Thisly can improve the speed of real-time information collection, excavation, transmission and the application of DCS system, promote the control performance of DCS system based on the real time data organizational technology of DCS system of level type notion.Is that the data organization scheme of unit has huge superiority than routine with the I/O measuring point.
Description of drawings
Fig. 1 has illustrated to adopt the DCS system architecture of hierarchical real-time data mapping techniques;
Fig. 2 has illustrated AI, the DI that does not wait by quantity, the real-time data base of DO unit maps generation LDPU;
Fig. 3 has illustrated to generate main website layer real-time data base by a plurality of field controllers (LDPU) mapping;
Fig. 4 has illustrated between the Different L DPU process of I/O layer real time data of exchange needs.
Embodiment
According to Figure of description and specific embodiment technical scheme of the present invention is carried out detailed presentations below.
A kind of large scale distributed control system DCS real time data real time data mapping steps of the present invention and method are as follows:
1. set up I/O layer real time data template, and as the base unit of hierarchical real-time data mapping
The I/O type definition is foundation class template and fieldbus template, and wherein the foundation class template comprises: definition AI, AO, DI, DO, PI real time data template; The fieldbus template comprises: templates such as motor protection observing and controlling, unit transformer protection observing and controlling, route protection observing and controlling, prepared auto restart observing and controlling.The I/O of same type has identical database, just measuring point value difference.
The I/O unit writes the real time data bag (real-time data base) of this I/O in real time to self measurement calculation level (real point), self check and condition discrimination (imaginary point); Fieldbus I/O and foundation class I/O are as broad as long, and the diagnostic message of fieldbus I/O, warning message all are present in the real time data module as measuring point.
Field controller and I/O layer are by field bus communication, and communication comprises gives field controller with I/O layer real time data bag, the descending control command of field controller is passed to corresponding I/O unit carry out.
2. the real time data tissue of controller layer
The real-time data base of controller (comprising controller LDPU and tuning controller HDPU on the spot) is made up of the real-time data base of the I/O layer unit that real time data module and this controller of this controller oneself are administered.The database of controller formed the real-time data base of these I/O unit by the address of the I/O layer unit that belongs to it by controller, the real-time data base of I/O unit and the real-time data base of controller are corresponding fully, and the real time data module of controller oneself comprises the internal state of controller and the communicate status information of diagnostic message, controller and I/O unit etc.
So-called data map is meant in the DCS system of systems, the unit that is positioned at lower floor is when the last layer unit sends real time data information, directly the real time data bag is sent to upper unit, upper unit need not to unpack, and the packet of receiving is directly write the real-time data base of this unit by the address of lower floor unit.Thereby realization is the whole data block of unit with the packet moves, and has maximum speed and efficient.
3. the exchange of the real time data between the controller layer
Controller (LDPU) is only communicated by letter with one's own I/O layer on the spot, and directly obtain the real time data of I/O layer equipment, because the needs of process control, LDPU also need to obtain the real time data that part belongs to the I/O layer equipment of other LDPU, this just needs to exist between the LDPU real time data exchange.By real-time control network communication, LDPU can be configured to receive the real time data bag of other LDPU between the LDPU, and only stores the real time data of other LDPU of this LDPU needs.
4. main website (HMI/SCADA) layer real time data tissue
The real time data mapping of real time data mapping between main website layer and the LDPU and controller layer and I/O layer is identical.I/O layer real-time data base formed the real-time data base of LDPU layer, and the real-time data base of LDPU has been formed the real-time data base of main website layer.The real-time data base of main website layer is whole real time datas of whole DCS system.
Adopt the large scale distributed control system of hierarchical real-time data mapping techniques to be divided into four layers of composition, as shown in Figure 1, be respectively:
1) HMI/SCADA master station layer
2) HDPU tuning controller layer
3) LDPU field controller layer
4) I/O layer (comprising fieldbus I/O)
Wherein ground floor HMI/SCADA on can with the information management system interface of production run, the 4th layer of I/O layer can insert spot sensor and actuator through fieldbus or hardwire.So far information acquisition, control, robotization and the management system of full factory have been constituted.。
The I/O layer comprises conventional I/O unit and fieldbus unit, and other conventional I/O is as follows:
■ AI analog input unit
■ AO analog quantity output unit
■ DI switching value input block
■ DO switching value output unit
■ PI pulsed quantity input block
Fieldbus I/O is as follows:
■ motor protection measurement and control unit
■ unit transformer protection measurement and control unit
■ prepared auto restart unit
■ route protection measurement and control unit
■ transformer differential protection unit
■ low pressure measurement and control unit
To above I/O unit definition real time data template, LDPU is positioned on the spot, connects the I/O unit respectively.The real time data of LDPU is made of two parts, and the first belongs to each I/O unit of this LDPU; It two is imaginary points of LDPU self.The mode that each I/O real time data of this direct mapping of technology employing LDPU wraps into the LDPU real-time data base makes up LDPU real time data bag fast.
Accompanying drawing 2 has been illustrated by the real-time data base of the real time data bag mapping generation field controller (LDPU) of I/O.
LDPU makes each LDPU can obtain the real time data of whole LDPU by the Control Network real-time Communication for Power.The same real time data that obtains whole LDPU from Control Network of HDPU with LDPU.
The real time data of HMI/SCADA is organized on the basis of the real-time data base that is based upon HDPU fully.The HMI/SCADA node is communicated by letter with HDPU by the TCP mode, and each HMI node is subscribed to the real time data of HDPU in real time, subscribes to the time cycle less than 100ms.The real-time data base of HDPU maps directly in the real-time data base of HMI node.
Claims (3)
1, storehouse and communication means are built in a kind of hierarchical real-time data storehouse that is used for large scale distributed control system DCS, described DCS system comprises main website layer (HMI/SCADA), tuning controller (HDPU) and field controller (LDPU) and the I/O layer that comprises field bus device, wherein communicating by letter of field controller (LDPU) and I/O layer adopted fieldbus networks, between tuning controller (HDPU) and the field controller (LDPU), the field control network is adopted in communication between field controller (LDPU) and the field controller (LDPU), the employing supervising the network of communicating by letter between main website layer (HMI/SCADA) and the tuning controller (HDPU); This method comprises:
1) data acquisition and measuring point calculate at the I/O layer and realize, set up the real time data template of I/O layer according to dissimilar I/O unit, as the minimum unit in DCS hierarchical real-time data storehouse;
2) I/O real time data packet communication is given field controller LDPU layer, field controller LDPU does not unpack, this I/O real time data is directly into the real-time data base of field controller LDPU, field controller LDPU sets up the real-time measuring point template of self, participates in the foundation of upper level database as the Database Mapping unit of field controller LDPU layer;
3) the real time data bag of field controller LDPU is directly shared by Control Network communication and other field controller LDPU, tuning controller HDPU, tuning controller HDPU does not unpack the total data that can obtain whole LDPU, has obtained the real time data of whole I/O simultaneously;
4) real-time data base of main website layer HMI/SCADA directly shines upon generation by the real time data bag of LDPU layer, and LDPU layer real time data bag does not unpack the real-time data base directly into main website, realizes that simultaneously the real time data of the different node of HMI/SCADA layer is synchronous.
2, real-time data base according to claim 1 is built storehouse and communication means; it is characterized by; described I/O unit comprises analog input unit (AI), switching value input block (DI), switching value output unit (DO), analog quantity output unit (AO), pulsed quantity input block (PI), also comprises the fieldbus unit of realizing different protection control function: motor protection measurement and control unit, unit transformer protection measurement and control unit, prepared auto restart unit, route protection observing and controlling, low pressure measurement and control unit.
3; real-time data base according to claim 2 is built storehouse and communication means; it is characterized by; the real time data template of described I/O layer is defined as foundation class template and fieldbus template according to described different I/O unit; wherein said foundation class masterplate comprises analog input unit (AI) real time data template; analog quantity output unit (AO) real time data template; switching value input block (DI) real time data template; switching value output unit (DO) real time data template; pulsed quantity input block (PI) real time data template, the fieldbus template comprises motor protection observing and controlling template; unit transformer protection observing and controlling template; route protection observing and controlling template; prepared auto restart observing and controlling template and low pressure observing and controlling template.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102053581A (en) * | 2009-11-10 | 2011-05-11 | 江苏云联科技有限公司 | Information acquisition and control method and information acquisition and control system |
| CN102360357A (en) * | 2011-09-29 | 2012-02-22 | 南京国电南自轨道交通工程有限公司 | Data synchronization component of network relation database nodes of SCADA (Supervisory Control and Data Acquisition) system |
| CN101969380B (en) * | 2009-11-23 | 2012-07-04 | 上海迪吉特控制系统有限公司 | Method for realizing hierarchical fault tolerance mesh distribution control system (DCS) communication network |
| CN101893876B (en) * | 2009-05-20 | 2012-08-08 | 北京四方继保自动化股份有限公司 | Control network method for large-scale distributed control system |
| CN102884532A (en) * | 2010-03-09 | 2013-01-16 | 欧特克公司 | Systems and methods for construction field management and operations with building information modeling |
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| CN101893876B (en) * | 2009-05-20 | 2012-08-08 | 北京四方继保自动化股份有限公司 | Control network method for large-scale distributed control system |
| CN102053581A (en) * | 2009-11-10 | 2011-05-11 | 江苏云联科技有限公司 | Information acquisition and control method and information acquisition and control system |
| CN102053581B (en) * | 2009-11-10 | 2016-05-11 | 江苏云联科技有限公司 | Information gathering and control method and information gathering and control system |
| CN101969380B (en) * | 2009-11-23 | 2012-07-04 | 上海迪吉特控制系统有限公司 | Method for realizing hierarchical fault tolerance mesh distribution control system (DCS) communication network |
| CN102884532A (en) * | 2010-03-09 | 2013-01-16 | 欧特克公司 | Systems and methods for construction field management and operations with building information modeling |
| US9679038B2 (en) | 2010-03-09 | 2017-06-13 | Autodesk, Inc. | Systems and methods for construction field management and operations with building information modeling |
| CN102360357A (en) * | 2011-09-29 | 2012-02-22 | 南京国电南自轨道交通工程有限公司 | Data synchronization component of network relation database nodes of SCADA (Supervisory Control and Data Acquisition) system |
| CN102360357B (en) * | 2011-09-29 | 2014-12-10 | 南京国电南自轨道交通工程有限公司 | Data synchronization component of network relation database nodes of SCADA (Supervisory Control and Data Acquisition) system |
| CN103135536A (en) * | 2013-02-01 | 2013-06-05 | 天津理工大学 | Data collection system (DCS) and information processing method of computer production simulation model |
| CN106980306A (en) * | 2017-03-29 | 2017-07-25 | 北京广利核系统工程有限公司 | A kind of nuclear power station data acquisition device and method |
| CN106980306B (en) * | 2017-03-29 | 2019-10-11 | 北京广利核系统工程有限公司 | A kind of nuclear power station data acquisition device and method |
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