CN105956118A - Method for realizing real-time information quality stamp distributed global database - Google Patents
Method for realizing real-time information quality stamp distributed global database Download PDFInfo
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- CN105956118A CN105956118A CN201610294468.5A CN201610294468A CN105956118A CN 105956118 A CN105956118 A CN 105956118A CN 201610294468 A CN201610294468 A CN 201610294468A CN 105956118 A CN105956118 A CN 105956118A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
Abstract
The invention relates to a method for realizing a distributed global database, and discloses a method for realizing a real-time information quality stamp distributed global database. On the basis of a DCS system, through adoption of a multi-level classified, cooperative and autonomous structure form, central management and dispersed control are realized. On the basis of a distributed project object master database, through adoption of a multi-process and multi-thread design mode, a real-time high-speed industrial Ethernet is taken as an information communication bridge between an operation station master database and control stations, each control station and projects are physically dispersed. Through adoption of a level storage pool management mechanism, on the premise of ensuring the timeliness demand of massive real-time data of a process industry, the quality condition of data real-time values is identified by quality stamps. Through adoption of the method, storage nodes can be dynamically added, thereby realizing linear extension of a storage capacity; the read/write requests of large-scale users must be timely responded by the distributed database; redundant backup is carried out on the data; and the data reliability is ensured.
Description
Technical field
The method that the present invention relates to be distributed global data base, particularly relates to one and realizes real time information quality stamp point
The method of cloth global data base.
Background technology
All the time DCS focus on control, it is using " dispersion " as keyword.But modern development is more
Focus on total system information comprehensive management, " comprehensively " its keyword will be become again from now on, to realizing control volume
System, operation architecture, the system of planning, the scheduling of management body, operation and management, so that top strategic decision,
Form a comprehensive automation direction with piping flexible, supermatic to develop, implement from the bottom
Control in real time, optimal control rises to produce control integral system.Along with developing rapidly of industrial automation,
Industrial process prompting message amount is the hugest, real-time property varies, data storage mechanism is different, number
Fast changing according to quality condition, the scale of MDL, operational efficiency, memory mechanism, the quality of data are distinguished
Etc. not proposing the requirement of harshness, the mistake of any link all will have influence on the safety of whole control system.Right
In modern industrial enterprises, policymaker how is made to check production process data at any time, in order to make more rapidly
For business decision flexibly, it is the key of IT application in enterprise, in every resource that enterprise MES is paid close attention to
In, production process information is still that important resource, if can not solve production process information in real time effectively on
The problem passed, still will cannot make full use of and ensure the investment of MES and ERP management system.Automatic in industry
Changing in industry, a large amount of use master data bank systems are controlled system monitoring, system Dynamic matrix control and optimization control
Make, and the production management and scheduling, data analysis, decision support and remote online for enterprise browses offer in fact
Time data, services and multiple data management function.MDL has become as industrial automation industry and enterprise information
Change Base data platform, can directly Real-time Collection, acquisition enterprise operation during various data, by it
It is converted into public information effective to all kinds of business, simultaneously existing by the real-time operation of data base is directly controlled
, to reality between meeting commercial production management, process monitoring, operation and management, data monitoring and directly controlling
Time the demand shared of information integrity, concordance, safety, can be industrial automation control system and management is believed
The bridge of information communication is set up between breath system.The each departments that are in charge of manging enterprises helping enterprise utilize these keys
Real time information, improves the operation efficiency of production and sales.One key property of MDL is exactly real-time,
Including real-time property and affairs real-time.Real-time property is the update cycle of on-the-spot I/O data, as master
Data base, it is impossible to do not consider real-time property.The real-time of general data is mainly restricted by field apparatus,
Especially for for the system that some are older, situation is the most so.Affairs real-time refers to data base couple
The speed of its issued transaction.It can be to be event triggered fashion or clocked flip mode.It is this thing that event triggers
Part once occurs immediately obtained to dispatch, and this kind of event can receive immediate attention, but compares consumption system
System resource；And clocked flip is to obtain scheduling power in the range of certain time.As a complete master data
Storehouse, for the stability and real-time of system, it is necessary to provide two kinds of scheduling modes simultaneously.For industry certainly
For dynamicization system, the data of slave computer are mainly derived from DCS control system, and data base becomes ditch catharsis
Position machine and the bridge of active station.Along with the development of industrial automation, Distributed Control System is widely used in
Various occasions, including thermoelectricity, chemical industry, pharmacy, oil refining, iron and steel, the energy, environmental protection etc..For automatization
Industry data number of test points is many, amount of storage is big, the ageing feature such as by force, and this just certainly will be to MDL each side
The performance requirement in face all brings various challenge.
Summary of the invention
The present invention is directed to real-time property in prior art and restricted serious shortcoming by field apparatus, it is provided that be a kind of
The method realizing real time information quality stamp distribution global data base.
A kind of method realizing real time information quality stamp distribution global data base, based on DCS system, employing is many
Layer classification, the version of cooperation autonomy, it is achieved centralized management and decentralised control, engineering object in a distributed manner
Based on MDL, use multi-process and multi-thread design pattern, comprise the steps:
(1) information communication between MDL and control station is realized by real-time industrial ethernet as active station
Bridge, make the physical dispersion between each control station and engineering；
(2) in a communication manner process control station set to plant information layer, the number of multiple physical dispersions
Couple together according to memory element and form the most unified distributed data base, be used for providing access means to grasp
Subdata base on these nodes vertical；
(3) hierarchical storage pond administrative mechanism is used, by the quality condition of quality stamp mark data instantaneous value；
(4) quality stamp and the packaged historical data base that is stored in of instantaneous value, quality stamp graphically represents
The most representative implication, icon shows in the module limited；
(5) when data acquisition, encapsulation of data currency and the initial data of quality of data stamp, input is believed
Number carry out disconnected resistance even, disconnected, broken string and signal detection；
(6) use signal back production, deviation comparative approach when controlling data output, form real time data quality
Stamp situation.
As preferably, identifying data instantaneous value by quality stamp in step (3) is to ensure process industry magnanimity
Carry out on the premise of real time data requirement of real-time.
As preferably, by control system to the matter in input/output procedure in step (5) to step (6)
Amount stamp display information, information includes channel position, duty and abnormal saltus step.
As preferably, channel position is respectively passage off-line, signal is inconsistent, use deviation, fault diagnosis,
Blueness is normal display, and red representation signal is inconsistent, and green represents network failure, diagnoses for passage；
Duty has normally, breaks, disconnected resistance, upper spilling, lower spilling even, disconnected, and duty is by actual hardware
Detection obtains；Abnormal saltus step is digital quantity path setting, be divided into without setting, Low value anomaly, high-value sector,
Variation abnormality, can set abnormal saltus step numerical value about analog quantity, and the value top/bottom latitude that module is corresponding exceeds different
Abnormal saltus step quality stamp often occurs after hop value.
As preferably, in step (1), MDL defines the variable information of each website, including the group at each station
Forming apparatus and attribute, the data acquisition of each point and conversion, warning, historical record and place of safety attribute, allow and be
The unified interface of system data is with globally consistent.
As preferably, step (5) also includes MDL editing machine to step (6), including network from
Line display quality stamp and warning message quality are stabbed, to the editor choosing measuring point can carry out warning message, when
The instantaneous value of measuring point relative to setting value produce report to the police time, by check watch window see engineering network,
Version information and corresponding quality stamp implication.
In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals: the present invention proposes one
Plant the method realizing real time information quality stamp distribution global data base, meet to the real time information of mass data
Reason.Distributed Control System i.e. scattered control system, uses control dispersion, operates substantially setting of good management concentration
Meter thought, uses the version that multi-layer classification, cooperation are autonomous, is main with centralized management and decentralised control
Feature.Distributed data base system is suitable for the scattered department of unit, it is allowed to the number that each department is commonly used
According to being stored in this locality, implement to deposit local use on the spot, thus improve response speed, reduce communication cost.
Distributed data base system has extensibility compared with centralized data base system, by increasing suitable number
According to redundancy, improve the reliability of system.Distributed data base has architecture flexibly；Adapt to distributed
Management and controlling organization；Economic performance is superior；The reliability of system is high, availability is good；Topical application
Fast response time；Extensibility is good, it is easy to integrated existing system.
Accompanying drawing explanation
Fig. 1 is the block schematic illustration of the present invention.
Fig. 2 is quality stamp block schematic illustration in Fig. 1.
Detailed description of the invention
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of method realizing real time information quality stamp distribution global data base, based on DCS system, employing is many
Layer classification, the version of cooperation autonomy, it is achieved centralized management and decentralised control, engineering object in a distributed manner
Based on MDL, use multi-process and multi-thread design pattern, comprise the steps:
(1) information between MDL and control station is realized by real time high-speed EPA as active station
The bridge of communication, makes the physical dispersion between each control station and engineering；
(2) in a communication manner process control station set to plant information layer, the number of multiple physical dispersions
Couple together according to memory element and form the most unified distributed data base, be used for providing access means to grasp
Subdata base on these nodes vertical；
(3) use hierarchical storage pond administrative mechanism, ensure process industry magnanimity real time data (200,000
Point scale) real-time (1ms～1s) require on the premise of, by quality stamp mark data instantaneous value quality
Situation；
(4) quality stamp and the packaged historical data base that is stored in of instantaneous value, quality stamp graphically represents
The most representative implication, icon shows in the module limited；
(5) when data acquisition, encapsulation of data currency and the initial data of quality of data stamp, input is believed
Number carry out disconnected resistance even, disconnected, broken string and signal detection；
(6) use signal back production, the deviation ratio method such as relatively when controlling data output, form real time data matter
Amount stamp situation.
Quality stamp display in input/output procedure is believed to step (6) by step (5) by control system
Breath, information includes channel position, duty and abnormal saltus step.
Channel position is respectively passage off-line, signal is inconsistent, use deviation, fault diagnosis, and blueness is just
Often display, red representation signal is inconsistent, and green represents network failure, diagnoses for passage；Duty
Have normal, break, disconnected resistance, upper spilling, lower spilling etc. even, disconnected, duty is detected by actual hardware
Arrive；Abnormal saltus step is digital quantity path setting, is divided into without setting, Low value anomaly, high-value sector, change different
Often waiting four kinds of modes, can set abnormal saltus step numerical value about analog quantity, the value top/bottom latitude that module is corresponding surpasses
Abnormal saltus step quality stamp occurs after going out abnormal hop value.
In step (1), MDL defines the variable information of each website, including component devices and the genus at each station
Property, the data acquisition of each point and conversion, warning, historical record and place of safety attribute, allow the system of system data
One interface is with globally consistent.
Step (5) also includes MDL editing machine to step (6), including internet off-line display quality
Stamp and warning message quality are stabbed, to the editor choosing measuring point can carry out warning message, when the reality of measuring point
Duration produces relative to setting value when reporting to the police, by checking that watch window sees the network of engineering, version information
With corresponding quality stamp implication.
The method using real time information quality stamp distribution global data base has enhanced scalability: distributed data
Storehouse must have enhanced scalability, it is possible to dynamically increases memory node to realize the linear expansion of memory capacity；
High concurrency: distributed data base must timely respond to the read/write requests of large-scale consumer, can be to mass data
Carry out random read/write；High availability: distributed data base must provide for fault tolerant mechanism, it is possible to realize data
Redundancy backup, it is ensured that data and the height reliability of service.
The distributed MDL that the present invention proposes is ensureing process industry magnanimity real time data (200000 rule
Mould) real-time (1ms～1s) require on the premise of, it is proposed that quality stamp concept, mark data quality shape
Condition.Changeable for Industry Control on-site signal, the features such as interference source is many, Monitoring Data is carried out effectiveness,
Doomed dead, out-of-limit, saltus step, abnormal state etc. effectively process and are even more important.For improving control system, scene is believed
Number fault-detecting ability, I/O module passage realize some point isolation, some point mutually every, be provided simultaneously with detecting in real time
The malfunctions such as disconnected resistance, disconnected even, broken string, up and down spilling.Newly-increased I/O digital quantity module channel value exception saltus step
Function is set, stabs in conjunction with measuring point quality, improve the fault-detecting ability of I/O passage further, meet urgent
Stop contour reliable and secure domain requirement.
In conjunction with automatically controlling the application of industry Distributed Control System, the MDL that the present invention proposes has concurrently
Following basic characteristics:
Measuring point quantity is many: Distributed Control System is widely used in the super-sized enterprises such as petrochemical industry, chemical industry, steel,
Need measuring point number to be processed exceed 10000 points, the period of change of these measuring points generally within 1 second,
It is to say, need to be saved in data base the data more than 10000 within 1 second.
Amount of storage is big: owing to data year in year out will occupy substantial amounts of hard drive space, MDL achieves
Substantial amounts of real time information is carried out perfect process.Such as the system of 10,000, within every 1 second, store once,
Every time single-point takies 8 bytes, then the data volume preserving 10 years will have
10000*8*10*365*86400=25228800000000 byte, namely 23TGB.If with 80GB's
Hard disk storing, needs to deposit 293 pieces of hard disks.
Ageing by force: the value of each need measuring point to be processed and time correlation, the data after a second with
Data before one second may be the most different, therefore, while preserving measuring point value, it is necessary to by certain
The time of its correspondence is also recorded by the method for kind.
The present invention is directed to that Distributed Control System measuring point is many, capacity is big and ageing strong feature, devise with
The distributed MDL of quality stamp, it is achieved the real-time communication between active station and dcs controller
With supervision control.
The present invention uses hierarchical storage pond administrative mechanism, is ensureing process industry magnanimity real time data (200,000
Point scale) real-time (1ms～1s) require on the premise of, by quality stamp mark data instantaneous value quality
Situation.The quality such as real time data quality stamp contains channel failure, sampling deviation, range transfinite, network state
Information, not only comprises the absolute mass representing self verity, completeness etc., and comprises and use and store
During represent and use quality, storage quality and the procedure quality of transmission quality etc., it is ensured that data reliable
Property and availability, improve the safety of data referencing.Quality stamp follows instantaneous value closely, has high ageing
(500ms).Quality stamp is stored in historical data base with instantaneous value is packaged, it is simple to the analysis to field data.
Quality stamp can graphically represent the most representative implication, but these icons only can show in restriction
Module in.When user needs to check that quality stabs information, but when not having again authority to enter these modules, use
Family can in man machine interface by quote quality stamp check diagnostic message.In actual applications, if used
Family needs to check the alarm condition of measuring point, then can in man machine interface the alarm condition of reference record point
Information, with this, user can judge whether this measuring point produces warning.
The data base using the inventive method supports in real time and 200000 scales of historical data, support trendgram,
Statistical table, components of data analysis etc.；Use multi-process and multi-thread design pattern, data base, device drives,
The program process independent operating such as network service, man machine interface, and can combination in any operate in identical or different
Machine on, as the important calculation function that controls is put on safer machine, can reasonably distribute
Machine burden；The having as whole system such as real time data, historical data, process alarm, Action Events
Resource can be shared；Support abundant equipment packages storehouse and succinct Graphic thinking function；Support local online group
State, online lower dress, in-service monitoring, by ICP/IP protocol realize the on-line monitoring of remote system, diagnosis and
Operation；Support the multiple fieldbus such as RS485, CAN, Ethernet, Modbus, Modbus/TCP with
The form of communication of EPA network or equipment interface so that system has stronger opening.Realize
The network driver block such as Modbus, Profibus DP, are connect with server by the OPC client of open specification
Mouthful, use transparent network management technique to realize the data communication with third party device, build ARCHITECTURE OF DISTRIBUTED ENGINEERING DBMS pair
As overall situation MDL, it is achieved system data and the globally consistent and unified interface of external device data, meet
The many real-times of industrial data, multi-semantic meaning, multi-space, the information of multiple dimensioned property integrated are wanted with interface opening
Ask；Support that various information imports and exports, completion of works figure, channel table, real time data table, Realtime Alerts
Table, form etc. can indiscriminately ad. as one wishes import and export with Excel form.
The present invention is directed to that Distributed Control System measuring point is many, capacity is big and ageing strong feature, devise with
The distributed MDL of quality stamp, it is achieved the real-time communication between active station and dcs controller
With supervision control.Distributed MDL refers to utilize information autobahn by the most scattered many numbers
Couple together according to memory element and form a data base the most unified.One application program is by network
Connection can access the data base being distributed in diverse geographic location.Its distributivity shows the number in data base
According to being not stored in Same Site.More precisely, it is not stored in the storage device of same computer.From
From the point of view of user, a distributed data base system is logically the same with centralized data base system, uses
Family can perform global application in any one place.Just look like that those data are stored in same computer
On, as having individual data base management system (DBMS) management, what user do not has and feels different.
Basic thought is to disperse storage to multiple data connected by network the data in original centralized data base
On memory node, to obtain bigger memory capacity and higher concurrent visit capacity.
The MDL software module of the present invention uses hierarchical storage pond administrative mechanism, with the distribution that the overall situation is unified
Based on formula engineering object MDL, using multi-process and multi-thread design pattern, data base, equipment drive
The program process independent operatings such as dynamic, network service, man machine interface, and can combination in any operate in identical or
On different machines, as the important calculation function that controls is put on safer machine, can rationally divide
Join machine burden.The quality condition of real time data quality stamp mark data, combined with hardware redundant state, contains
The information such as channel failure, sampling deviation, range transfinite, network state, it is ensured that the reliability of real time data and
Availability, improves the safety of data referencing；Support quality stamp and the historical record of instantaneous value simultaneously and chase after
Recall analysis.
In a word, the foregoing is only presently preferred embodiments of the present invention, all made according to scope of the present invention patent
Impartial change with modify, all should belong to the covering scope of patent of the present invention.
Claims (6)
1. the method realizing real time information quality stamp distribution global data base, based on DCS system, uses multilamellar
Classification, the version of cooperation autonomy, it is achieved centralized management and decentralised control, engineering object master in a distributed manner
Based on data base, use multi-process and multi-thread design pattern, it is characterised in that comprise the steps:
(1) by real-time industrial ethernet as the bridge of information communication between active station MDL and control station,
Make the physical dispersion between each control station and engineering；
(2) in a communication manner process control station set to plant information layer, the data of multiple physical dispersions are deposited
Storage unit couples together and forms the most unified distributed data base, is used for providing access means to handle this
Subdata base on a little nodes；
(3) hierarchical storage pond administrative mechanism is used, by the quality condition of quality stamp mark data instantaneous value；
(4) quality stamp and the packaged historical data base that is stored in of instantaneous value, quality stamp graphically represents each
Representative implication, icon shows in the module limited；
(5) when data acquisition, encapsulation of data currency and the initial data of quality of data stamp, enter input signal
The disconnected resistance even, disconnected of row, broken string and signal detection；
(6) use signal back production, deviation comparative approach when controlling data output, form real time data quality stamp shape
Condition.
A kind of method realizing real time information quality stamp distribution global data base the most according to claim 1, it is special
Levy and be: identifying data instantaneous value by quality stamp in step (3) is to ensure that process industry magnanimity counts in real time
Carry out according on the premise of requirement of real-time.
A kind of method realizing real time information quality stamp distribution global data base the most according to claim 1, it is special
Levy and be: the quality in input/output procedure is stabbed aobvious by control system by step (5) to step (6)
Show that information, information include channel position, duty and abnormal saltus step.
A kind of method realizing real time information quality stamp distribution global data base the most according to claim 3, it is special
Levy and be: channel position is respectively passage off-line, signal is inconsistent, use deviation, fault diagnosis, blue
For normal display, red representation signal is inconsistent, and green represents network failure, diagnoses for passage；Work
State includes normally, breaks, disconnected resistance, upper spilling, lower spilling even, disconnected, and duty is examined by actual hardware
Record；Abnormal saltus step is digital quantity path setting, is divided into without setting, Low value anomaly, high-value sector, change
Changing abnormal, can set abnormal saltus step numerical value about analog quantity, the value top/bottom latitude that module is corresponding exceeds abnormal
Abnormal saltus step quality stamp occurs after hop value.
A kind of method realizing real time information quality stamp distribution global data base the most according to claim 1, it is special
Levy and be: in step (1), MDL defines the variable information of each website, including the component devices at each station
And attribute, the data acquisition of each point and conversion, warning, historical record and place of safety attribute, allow system data
Unified interface with globally consistent.
A kind of method realizing real time information quality stamp distribution global data base the most according to claim 1, its
It is characterised by: step (5) also includes MDL editing machine to step (6), shows including internet off-line
Show that quality stamp and warning message quality are stabbed, to the editor choosing measuring point can carry out warning message, work as record
The instantaneous value of point produces relative to setting value when reporting to the police, by checking that watch window sees the network of engineering, version
This information and corresponding quality stamp implication.
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| CN114416714A (en) * | 2022-01-18 | 2022-04-29 | 军事科学院系统工程研究院后勤科学与技术研究所 | Data management system |
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| CN105956118B (en) | 2019-06-04 |
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