CN109116751A - Digitization system and its construction method based on the twin technology of number - Google Patents
Digitization system and its construction method based on the twin technology of number Download PDFInfo
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Abstract
The present invention provides a kind of digitization systems and its construction method based on the twin technology of number, digitization system includes: the data space subsystem and data portal module being in communication with each other, data space subsystem and data portal module as a whole, constitute the corresponding digitization system based on the twin technology of number of target physical entity；It is mapping relations between data space subsystem and target physical entity, and data space subsystem is used to store the data of whole classifications in description information, knowledge collection and the lifecycle process of target physical entity；Information exchange of the data portal module between data space subsystem and external system provides communication interface, and external system includes target physical entity and other digitization systems and/or information system.The present invention can accurately express the mapping relations between physical entity, and can specify system components and the definition of each section particular content, and then provide the application standard of the twin technology of number.
Description
Technical field
The present invention relates to technical field of data processing, and in particular to a kind of digitization system based on the twin technology of number and
Its construction method.
Background technique
The twin concept blank of number is taught by the Grieves of Univ Michigan-Ann Arbor USA and was put forward for the first time in 2003, gradually
Development and perfection, conceptual model were suggested in 2011, the virtual product of physical product, Virtual Space including physical space
And data and information interactive interface between the two.The twin definition of number be make full use of physical model, sensor to update,
The data such as history run integrate the simulation process of multidisciplinary, more physical quantitys, multiple dimensioned, more probability, complete to reflect in Virtual Space
It penetrates, reflects the lifecycle process of corresponding entity equipment.Twin number is to be created with digital form in Virtual Space
The real-time mirror image for building physical entity is simulation model of the physical entity in Virtual Space, passes through physical entity and digital twins
Between carry out data and information exchange and complete to can be used for physical entity the complete and accurate digitized description of physical entity
Behavior and state in physical environment are simulated, are monitored, are diagnosed, predicted and are controlled.
In the prior art, the presenter of the twin conceptual model of number proposed its three-dimensional structure, including physics sky in 2011
Between physical model and Virtual Space dummy model, and between data and information exchange.3 d structure model is that number is twin
Raw basic model, building core are the data connections of dummy model and physical space and Virtual Space.Key when deployment is asked
Topic, which is succession between the two, not yet to be realized with connecting, but using dummy model as reference, it is served as between the two by people
Connection.In the technical scheme, scholar proposes to realize two by constructing unified repository (Unified Repository, UR)
Linkage function between person.Thereafter, there is scholar that the twin three-dimensional structure of number is expanded to five dimension structural models, including physics reality
Body, dummy model, service system, twin data and connection.In addition, thering is scholar to mention in terms of the twinborn building process of number
The data being directed to out using automation modeling language (Automation ML) between the not homologous ray being connected with digital twins are transmitted
It is modeled, realizes the mapping to physical entity in digital space.
However, existing " 3 d structure model " and " five dimension structural models " is in conceptual model stage, module composition
Content there is no standard at present, and the relationship description that interconnects between module is not specific, and such as how digitized expression way is built
Vertical physical entity there is no specific implementation method in the mapping of digital space.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of digitization system and its structure based on the twin technology of number
Construction method can accurately express the mapping relations between physical entity, and can specify system components and each section
Particular content definition, and then provide the application standard of the twin technology of number.
In order to solve the above technical problems, the present invention the following technical schemes are provided:
In a first aspect, the present invention provides a kind of digitization system based on the twin technology of number, the digitization system packet
Include: the data space subsystem and data portal module being in communication with each other, data space subsystem and data portal module are as one
A entirety constitutes the corresponding digitization system based on the twin technology of number of target physical entity；
It is mapping relations between the data space subsystem and target physical entity, and the data space subsystem is used for
Store the data of whole classifications in description information, knowledge collection and the lifecycle process of the target physical entity；
Information exchange of the data portal module between the data space subsystem and external system provides
Communication interface, wherein include the target physical entity in the external system, also include that other physical entities are corresponding
Digitization system and/or information system.
In one embodiment, the data space subsystem includes: the body module being in communication with each other, knowledge module and data
Module, and the body module, knowledge module, data module and data portal module are as a whole, constitute mesh
Mark the corresponding digitization system based on the twin technology of number of physical entity；
The body module is used to store function, the description information of performance and physical characteristic of target physical entity, and divides
Function, performance and the physical characteristic of target physical entity are not provided to knowledge module, data module and data portal module
Description information；
The knowledge module is for storing the corresponding knowledge collection of target physical entity indicated in the form of polymeric；
The data module is for storage and management by the data group in the body module and the knowledge module
At the target physical entity lifecycle process in whole classifications data.
In one embodiment, the body module includes: taxon, member unit and associative unit；
The taxon is used to divide the description information of the slave unit of the physical entity and the physical entity
Class, and store classification information；
The member unit describes the component part of the target physical entity and the ginseng of each component part for storing
Number, wherein the parameter of the component part includes material data, geometric dimension data and performance data；
The associative unit is used to store the corresponding relationship in the target physical entity between each component part,
In, the corresponding relationship include internal relations between each component part and the target physical entity as a whole
External relations.
In one embodiment, the knowledge module includes: knowledge model unit and information unit；
The knowledge model unit is used to reflect the structure of knowledge of the target physical entity, including structure simulation model,
In electromagnetic model, kinetic model, thermodynamical model, materials behavior evolutionary model, stress analysis model and Fatigue Damage Model
One kind or any combination；
The information unit is used in the form of structured data or non-structural data to the knowledge of the target physical entity
Structure is described, including one of document, multimedia file and program or any combination.
In one embodiment, the data module is used in the form of data volume to the full life of the target physical entity
Data in period are classified and are associated in digital space, and store the classification and associated result；
Wherein, the data volume is made of data organization relationship and data acquisition system；And data volume ordinal number when being divided into
According to non-sequential data.
In one embodiment, the data portal module includes: response interface unit, service pool unit, indexing units and peace
Full unit；
The response interface unit is for handling the body module, knowledge module and data module and the outside
Interaction request between system；
The service pool unit is for handling service-oriented response；
The indexing units are used to carry out rope to the information in the body module, knowledge module and data module
Draw；
The safe unit is for being authenticated and being authenticated to the process of data interaction.
Second aspect, the present invention provide the construction method of the digitization system based on the twin technology of number described in one kind,
The data space subsystem includes the body module being in communication with each other, knowledge module and data module；The construction method
Include:
Establish the data space subsystem corresponding with the target physical entity；
Add the body module, knowledge module and data module respectively in the data space subsystem；
Corresponding unit is added in the body module, knowledge module and data module respectively, and each
Corresponding description information is added in a unit；
And it is built according to the body module, knowledge module and the data module in the data space subsystem
Found the data portal module.
In one embodiment, described addition is respectively right in the body module, knowledge module and data module respectively
The unit answered, and corresponding description information is added in each unit, comprising:
Increase taxon, member unit and associative unit in the body module, and in the taxon, component
Corresponding description information is added in unit and associative unit；
The incidence relation between the knowledge module and the body module is established, and according in the body module
Description information in taxon, member unit and associative unit, in the knowledge module add knowledge model unit and
Information unit；
And in the data module, according to the description information of the body module and the knowledge module, deposit
The full life for the target physical entity that storage and management are made of the data in the body module and the knowledge module
The data of whole classifications in periodic process.
In one embodiment, each information in the body module and the knowledge module is corresponding with unique identification；
The data module is corresponding unique according to each information in the body module and the knowledge module
Mark, the mode based on database table or computer semantic description carry out distributed storage to each information.
In one embodiment, the body module according in the data space subsystem, knowledge module sum number
The data portal module is established according to module, comprising:
According to the body module, knowledge module and the data module in the data space subsystem, build respectively
Vertical response is for forming interface unit, service pool unit, indexing units and the safe unit of the data portal module.
As shown from the above technical solution, the present invention provides a kind of digitization system based on the twin technology of number, passes through phase
The data space subsystem and data portal module of mutual communication；It is to reflect between the data space subsystem and target physical entity
Relationship is penetrated, and the data space subsystem is used to store description information, knowledge collection and the full life of the target physical entity
Order the data of whole classifications in periodic process；The data portal module is used for as the data space subsystem and external system
Information exchange between system provides communication interface, wherein includes the target physical entity in the external system, also includes
There are the corresponding digitization system of other physical entities and/or information system, can accurately express to map between physical entity and close
System, and system components and the definition of each section particular content can be specified, and then provide answering for digital twin technology
With standard, it is designer according to physical entity own situation progress digital model building providing method foundation, has important
Theory significance and reality application demand.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the digitization system based on the twin technology of number in the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of the data space subsystem in digitization system of the invention.
Fig. 3 is the structural schematic diagram of the body module in data space subsystem of the invention.
Fig. 4 is the classification example schematic of hydraulic pump of the invention.
Fig. 5 is cam-type axial piston pump structural schematic diagram of the invention.
Fig. 6 is the structural schematic diagram of the knowledge module in data space subsystem of the invention.
Fig. 7 is the structural schematic diagram of the data portal module in data space subsystem of the invention.
Fig. 8 is the structural model of the digitization system based on the twin technology of number and target physical entity composition of the invention
Schematic diagram.
Fig. 9 is the process of the construction method of the digitization system based on the twin technology of number in the embodiment of the present invention two
Schematic diagram.
Figure 10 is the structure of knowledge schematic diagram of the knowledge module of cam-type axial piston pump of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
For the problems of prior art, the present invention provide a kind of digitization system based on the twin technology of number and
Its construction method, wherein the 3 d structure model in the prior art based on the twin technology of number, by taking the production stage as an example,
Establish the threedimensional model annotated entirely, Establishing process list (Bill of Process, BOP) and manufacture material list
(Manufacturing Bill of Materials, MBOM), and hand over to manufacturer and digital product is carried out to it
Flow simulation.At Virtual Space end, the characteristic of physical entity and the design characteristics parameter tags as physical entity are identified,
Label is obtained from Virtual Space end when delivering production and creates UR, to establish virtual light weight model.At physical entity end, obtain
Take such label in the BOP of production information management system (Manufacturing Execution System, MES) and on
UR is passed to, then transmits it to production plant emulation end to replicate the practical manufacturing process of each product in each factory.Production
Factory's emulation end is exchanged in real time with UR, and the data obtained from physical entity are showed in Virtual Space end.For existing skill
Five dimension structural models in art based on the twin technology of number, the component part of physical entity is various functional subsystems, is such as controlled
Subsystem etc., and by the cooperation between subsystem to realize function.Dummy model is the digitlization mirror image of physical entity, including several
What, 4 layer models of physics, behavior and rule.Wherein: geometrical model describes geometric parameter, and physical model analyzes physical attribute, behavior
The extraneous driving of model response and perturbation action, rule model model the operation rule of physical entity.Service system is integrated with respectively
Category information system, all related datas of twin data inclusion reason entity, dummy model and service system, connects above four
A part carries out connection two-by-two and realizes that effective data transmission is in real time to guarantee the consistency between each section.And digital double
It proposes to be directed to using automation modeling language (AutomationML) in terms of the building process of born of the same parents' tire and be connected with digital twins
Not homologous ray between data transmission modeled, realize mapping to physical entity in digital space.Aitor Moreno needle
The twinborn building process of number is proposed to metal plate perforating press.Physical space description comprising physical entity behavior and with other systems
Connection two parts between system.Virtual Space description includes 3D modeling, physical entity behavior extraction and the knowledge table of physical entity
Show, the interaction of physical entity and other moving parts is modeled, physical entity behavior is modeled.Eventually by ether
Net/Internet Protocol carries out the connection between different digital twins.For the above-mentioned prior art, the embodiment of the present invention
By the way that the data space subsystem and data portal module that are in communication with each other is arranged；The data space subsystem and target physical are real
It is mapping relations between body, and the data space subsystem is used to store description information, the Knowledge Set of the target physical entity
The data of conjunction and whole classifications in lifecycle process；The data portal module is used to be the data space subsystem
Information exchange between system and external system provides communication interface, wherein includes the target physical in the external system
Entity also includes the modes such as the corresponding digitization system of other physical entities and/or information system, can accurately be expressed and object
Mapping relations between entity are managed, and system components and the definition of each section particular content can be specified, and then provide
The application standard of the twin technology of number is designer according to physical entity own situation progress digital model building provider
Method foundation, the application demand with important theory significance and reality.It is carried out especially by following embodiments one and two in detail
Explanation.
The embodiment of the present invention one provides a kind of specific embodiment of digitization system based on the twin technology of number, ginseng
See that Fig. 1, the digitization system based on the twin technology of number specifically include following content:
The data space subsystem and data portal module being in communication with each other, data space subsystem and data portal module are made
For an entirety, the corresponding digitization system based on the twin technology of number of target physical entity is constituted.
It is mapping relations between the data space subsystem and target physical entity, and the data space subsystem is used for
Store the data of whole classifications in description information, knowledge collection and the lifecycle process of the target physical entity.
Information exchange of the data portal module between the data space subsystem and external system provides
Communication interface, wherein include the target physical entity in the external system, also include that other physical entities are corresponding
Digitization system and/or information system.
It is understood that the target physical entity be with the unique corresponding physical entity of Contemporary Digital system, should
Physical entity can be chosen according to practical application request, can be the entities such as mechanical structure body, such as the target physical entity
It can be a kind of pump, and be specifically as follows a kind of cam-type axial piston pump etc..The data space subsystem and target physical
Refer to that the data space subsystem reflects relatively completely in digitized form in Virtual Space between entity for mapping relations
The lifecycle process for the target physical entity answered is referred to the physical entity of real world and is sought using digitizing technique
The digitlization image corresponding with physical entity made.Include target physical entity in the external system, can also include
One or all in the corresponding digitization system of other physical entities and other information system.
As can be seen from the above description, the digitization system of the invention based on the twin technology of number, can accurately express and object
Mapping relations between entity are managed, and system components and the definition of each section particular content can be specified, and then provide
The application standard of the twin technology of number.
In a specific embodiment, the present invention also provides institutes in the digitization system based on the twin technology of number
The specific embodiment of data space subsystem is stated, referring to fig. 2, the data space subsystem specifically includes following content:
Body module, knowledge module and the data module being in communication with each other, and the body module, knowledge module,
Data module and data portal module as a whole, it is corresponding based on the twin technology of number to constitute target physical entity
Digitization system.
It is understood that the body module, knowledge module and data module are respectively as an entirety, three
Between it is interrelated.
First, the body module is used to store function, the description information of performance and physical characteristic of target physical entity,
And function, performance and the physics of target physical entity are provided to knowledge module, data module and data portal module respectively
The description information of characteristic.
In the foregoing description, the body module is according to physical entity itself, the description to physical entity itself, has super
Realism, such as function, performance and the physical characteristic of physical entity are to adhere to type, property and related pass separately to physical entity
The set of system and its description of connection.
Second, the knowledge module is for storing the corresponding knowledge of target physical entity indicated in the form of polymeric
Set.
In the foregoing description, the knowledge module is the set of knowledge associated with physical entity, and reflection physics is real
Management And Organization or map of the body in knowledge level.The ultimate ideal behavior form of the knowledge body of physical entity is that there are a systems
One model can cover all theory and knowledges of physical entity, can be used for establishing the complete and accurate number of physical entity
Change description or behavior prediction is carried out to physical entity by model emulation.However currently, physical entity has a variety of physics special
Property, there are a variety of physical structure models, material models etc., and the description of knowledge body can not be completed by single model, need to lead to
Cross the polymeric form description of mechanism, design and behavior of physical entity etc..Polymeric component part includes by performance shape
State is model and can not be with other knowledge section of model tormulation.
Third, the data module is for storage and management by the number in the body module and the knowledge module
According to the data of whole classifications in the lifecycle process of the target physical entity of composition.
In the foregoing description, the data module is the data organization relationship of physical entity and under the membership credentials
Data acquisition system, the data in physical entity Life cycle are classified and are associated in digital space, i.e., actual storage
It is one of the core component of digitization system based on the twin technology of number with management.Data volume is by data organization relationship
It is formed with data acquisition system, contains all categories data in physical entity lifecycle process, can be realized full Life Cycle
The information flow in phase in each stage, while physical entity is had recorded in the digitalized data archives of Life cycle, have recorded physics
Forming process, state and behavior of the entity in Life cycle each stage, increase at any time and constantly accumulate, scale gradually increases
It is long.Other class data that data volume can be classified as the time series data with time correlation and be unrelated with the time.Meanwhile not only inhomogeneity
There may be correlativity between other data, and same class data may there are correlativities with multi-class data.Its correlativity
Description can be by database table or computer semantic description.
As can be seen from the above description, the digitization system of the invention based on the twin technology of number, can accurately express and object
Mapping relations between entity are managed, and system components and the definition of each section particular content can be specified, and then provide
The application standard of the twin technology of number is designer according to physical entity own situation progress digital model building provider
Method foundation, the application demand with important theory significance and reality.
In a specific embodiment, the present invention also provides institutes in the digitization system based on the twin technology of number
The specific embodiment for stating body module, referring to Fig. 3, the body module specifically includes following content:
Taxon, member unit and associative unit, and include the sheet of the taxon, member unit and associative unit
Module is interrelated between the knowledge module as a whole.
First, the taxon be used for the description information of the slave unit of the physical entity and the physical entity into
Row classification, and store classification information.
In the foregoing description, the taxon is the objective consistent description to physical entity, in digital space with
The description of physical space reality is consistent.Similar to biology classification according to " guiding principle-mesh-section " division, ontology each
Classification has the symbol of a unique identification to indicate.It is analysis object citing with pump, pump is that the mechanical energy of prime mover is converted
For liquid pressure energy, for the machinery of pressure-increasing unit liquid.And hydraulic pump is one kind of pump, provides fluid under pressure for hydraulic drive
A kind of Hydraulic Elements, be the energy of hydraulic system.The classification of hydraulic pump referring to fig. 4, can be divided by structure type: gear pump,
Vane pump, plunger pump and screw pump.Gear pump can be divided by mesh form: external gear rotary pump and crescent gear pump；Plunger
Pump can be divided into according to the arrangement of plunger and direction of motion difference: axial plunger pump and radial plunger pump, and axial plunger pump is by biography
Whether moving axis is consistent with the axis of rotary cylinder-block, can be divided into: cam-type axial piston pump and angle type axial piston pump.Therefore,
The classification of external gear rotary pump are as follows: pump-hydraulic pump-gear pump-external gear rotary pump, the classification of cam-type axial piston pump are as follows:
Pump-hydraulic pump-plunger pump-axial plunger pump-cam-type axial piston pump.
Second, the member unit is for storing the component part and each component part for describing the target physical entity
Parameter, wherein the parameter of the component part includes material data, geometric dimension data and performance data.
In the foregoing description, the ginseng of the component part of the member unit component description physical entity and each component part
Number describes granularity and refers to industrial minimum interchangeable part, such as the component of transformer is iron core, coil.Composition portion
Dividing parameter includes material data, geometric dimension data and performance data etc..For example, the component part of cam-type axial piston pump
Are as follows: plunger 1, cylinder body 2, oil distribution casing 3, transmission shaft 4, swash plate 5, piston shoes 6, return plate 7 and central spring 8 etc., referring to Fig. 5, composition
Partial parameters include: plunger quantity z, piston structure dimensional parameters such as diameter of plunger d, nominal length l and plunger pitch circle diameter D
Deng the inside and outside diameter D of housing structure dimensional parameters such as cylinder body1、D2With height H etc., piston shoes structural shape and parameters of structural dimension, tiltedly
Disk inclination angle δ etc..
Third, the associative unit is used to store in the target physical entity the corresponding pass between each component part
System, wherein the corresponding relationship includes internal relations between each component part and the target physical entity as one
Whole external relations.
In the foregoing description, the associative unit is the relationship described in component between various pieces, comprising internal and outer
Two aspect of portion.Connection between internal connection, that is, component various pieces, comprising: physical connection, relative position, cause and effect factor, defeated
Enter, export, feed back；External relation describes physical entity and unifies external feature and function information, such as actuating as a whole
Installation site of the mechanism in breaker, input and output etc..By taking the cam-type axial piston pump in Fig. 5 as an example, in component
Portion contacts such as: position that the position in plunger hole that plunger 1 is placed in cylinder body 2, oil distribution casing 3 are connect with transmission shaft 4, plunger 1
It is rotated relative to cylinder body 2, the displacement relative to cylinder body 2 is the function etc. of δ Yu cylinder body rotation angle.By inclined disc type axis
As a whole to plunger pump, external relation is such as: with oil filter, hydraulic cylinder, hydraulic motor, fuel tank, throttle valve, overflow valve, open
Stop the composition crane such as all kinds of valve components such as valve or undercarriage multiclass hydraulic system；Its power inputted as prime mover, it is dynamic with original
Machine is connected, its mechanical energy is converted to liquid pressure energy, provides power for hydraulic system；It is oil pressure that it, which is exported, with hydraulic pressure system
The executive component of system: hydraulic cylinder or hydraulic motor are connected, and liquid pressure energy is converted into mechanical energy.
In a specific embodiment, the present invention also provides institutes in the digitization system based on the twin technology of number
The specific embodiment for stating knowledge module, referring to Fig. 6, the knowledge module specifically includes following content:
Knowledge model unit and information unit, and include the knowledge body mould of the knowledge model unit and information unit
Block is interrelated with the data body Model as a whole.
First, the knowledge model unit is used to reflect the structure of knowledge of the target physical entity, including structure simulation
Model, electromagnetic model, kinetic model, thermodynamical model, materials behavior evolutionary model, stress analysis model and fatigue damage mould
One of type or any combination.
In the foregoing description, the knowledge model in the knowledge model unit is used to reflect the not ipsilateral of physical entity,
Include structure simulation model, electromagnetic model, kinetic model, thermodynamical model, materials behavior evolutionary model, stress analysis mould
Type, Fatigue Damage Model etc., some characterize causality, some characterize correlativity etc..Model is that computer is executable
Operation, the time of day of physical entity can be reflected in real time by Computer Simulation and analysis.
Second, the information unit is used in the form of structured data or non-structural data to the target physical entity
The structure of knowledge is described, including one of document, multimedia file and program or any combination.
In the foregoing description, the data in the information unit is in the form of structure or non-structural data to related knowledge
Description, such as: document, multimedia file, program.
By taking the cam-type axial piston pump in Fig. 5 as an example, knowledge model includes: basic mathematic model, according to structure into
The formula such as displacement, speed, acceleration, flow and pressure obtained from row kinematics analysis, flow analysis, Pressure Analysis, row
Amount V and flow q formula are shown in formula (1) and (2)；
Wherein, simulation model includes:
(1) Dynamics Simulation Model, the hydraulic module and inclined shaft such as carried using AMESim software/ADAMS software pump dynamic
Transmission shaft is analyzed in mechanical model coupling；Wherein, AMESim (Advanced Modeling Environment for
Performing Simulation of engineering systems) it is that multidisciplinary field modeling and simulating of complex system is flat
Platform.User can establish the system model in complicated multidisciplinary field on this single platform, and be imitated on this basis
It is true to calculate and analyse in depth, the stable state and dynamic property of any element or system can also be studied on this platform.Such as
Application in fuel oil injection, braking system, power transmission, hydraulic system, Mechatronic Systems and cooling system.ADAMS software uses
Based On Integrated Graphic Environment and parts library, constraint library, power library, create the mechanical system geometrical model of risk management, solver
Using the Lagrange's equation method in multi rigid body system dynamics theory, system dynamics equation is established, to virtual machine system
System carries out statics, kinematics and dynamic analysis, output displacement, speed, acceleration and reaction force curve.ADAMS software
Emulation can be used for predicting the performance of mechanical system, motion range, collision detection, peak load and the input for calculating finite element
Load etc..
(2) stress-strain analysis simulation model, such as using ANSYS software be based on dynamics model analysis stress to structure into
Row building；Wherein, ANSYS software is melt structure, fluid, electric field, magnetic field, Analysis of The Acoustic Fields in the large-scale general finite element fraction of one
Analyse software.
(3) analysis of fatigue model carries out analysis building based on stress-strain analysis result；
(4) thermodynamics simulation model such as uses empirical equation (as represented exchange capability of heat using SINDA/FLUINT software
Nu Xieerte Nu and represent the fitting correlation between the reynolds number Re of flow pattern and the Prandtl Pr number for representing physical property) building flowing with
Heat transfer relation etc..SINDA/FLUINT is a kind of large-scale Heat Flow Analysis software.
Data includes: photo, such as cam-type axial piston pump and each component, infrared camera wears hydraulic system,
Leakage part carries out the detection of hot spot displays temperature；Program, such as resolving between anisotropic axial plunger pump friction pair
The CASPAR program of gap oil film characteristic.
In formula, z is plunger number, and n is revolving speed, ηvFor volumetric efficiency.
In a specific embodiment, the present invention also provides institutes in the digitization system based on the twin technology of number
The specific embodiment of data module is stated, the data module specifically includes following content:
The data module is used in the form of data volume to the number in the Life cycle of the target physical entity
Classified and be associated with according in digital space, and stores the classification and associated result；Wherein, the data volume is by data organization
Relationship and data acquisition system composition；And the data volume is divided into time series data and non-sequential data.
By taking cam-type axial piston pump as an example, performance parameter illustrates pump in the performance and shape in Life cycle each stage
State, for the time series data with time correlation；Its parameters of structural dimension have recorded physical entity pump essential information, partially be and when
Between unrelated other class data, such as plunger quantity z, diameter of plunger d, plunger pitch circle diameter D etc..Performance parameter is listed below:
Pressure: operating pressure p, rated pressure p0, maximum pressure pmax, the limit input pressure of pump；
Revolving speed: rated speed n0, maximum speed nmax, minimum speed nmin；
Discharge capacity and flow: discharge capacity V, metered flow qvn, average theory flow qvt, actual flow qv, instantaneous flow qvsh, stream
Measure nonuniformity coefficient δq, part formula is shown in (3)-(5).
qv=qvt-△q (4)
δq=[(qvsh)max-(qvsh)min]/qvt (5)
In formula, n is revolving speed, and △ q is leakage rate under a certain pressure, (qvsh)maxFor maximum instantaneous flow, (qvsh)min
For minimum instantaneous flow.
Power and efficiency: output power P, input power Pp, gross efficiency η, volumetric efficiency ηv, mechanical output ηm.Part formula
See (6)-(10).
P=△ pqv/60 (6)
Pp=△ pqv/η (7)
η=(△ pqv)/Pp (8)
ηv=qv/(nV) (9)
In formula, △ p is the inlet outlet pressure differential of pump, and T is the input torque of pump.
The relationship that each performance parameter of hydraulic pump is had recorded in data volume, as listed by above-mentioned formula, between different data classification
With connection, such as qvtThere are correlativities with the n and V of pump.Parameters in real time and history data according to the relationship into
Row storage, and can retrieve.
In a specific embodiment, the present invention also provides institutes in the digitization system based on the twin technology of number
The specific embodiment for stating data portal module, referring to Fig. 7, the data portal module specifically includes following content:
Response interface unit, service pool unit, indexing units and safe unit；
The response interface unit is for handling the body module, knowledge module and data module and the outside
Interaction request between system；The service pool unit is for handling service-oriented response；The indexing units are used for institute
The information stated in body module, knowledge module and data module is indexed；The safe unit is used for data interaction
Process authenticated and authenticated.
In the foregoing description, data portal is that the digitization system based on the twin technology of number is pacified with the external world
Entirely, quickly, the interface of the information of light weight and data interaction, realize the digitization system based on the twin technology of number and extraneous
Interaction.Interactive mode can be API or service-oriented.Interactive information include: physical entity with it is described twin based on number
The information exchange of the digitization system of raw technology, the digitization system based on the twin technology of number are in digital space and other
The digitization system based on the twin technology of number information exchange and the digital system based on the twin technology of number
Three aspect of information exchange of system and other information system.
Data portal module is at least by response interface unit, service pool unit, indexing units and safe unit totally four part
It constitutes, builds the external data exchange channels of the digitization system based on the twin technology of number.Response interface processing and the external world
Interactive request (including external internal request and internal external request)；Service pool handles service-oriented response；Index
Module is indexed the digitization system internal information based on the twin technology of number, to meet fast poll response；Safe mould
Block is authenticated and is authenticated to the process of data interaction, guarantees the safety of the digitization system based on the twin technology of number.
In a kind of specific application example, digitization system and target physical of the invention based on the twin technology of number are real
As shown in figure 8, A indicates target physical entity, A ' indicates that its is corresponding based on the twin technology of number for the structural model of body composition
Digitization system, a indicate that ontology, b indicate that knowledge body, c indicate that data volume, d indicate data portal, ontology a, knowledge body b, data
Body c is respectively described target physical entity A from three sides in digital space, and data portal d is twin based on number
The digitization system A ' of technology and the extraneous window for carrying out information exchange.Aforementioned four part connects two-by-two, and ontology a is respectively to knowing
Know body b, data volume c and data portal d provide classification, component and the contact details of target physical entity A, and providing part can be with
The parameter identification that the inside digitization system A ' based on the twin technology of number can be identified；Model and data in knowledge body b
It can describe component in ontology a and contact the physical model relationship contained among part and correlativity, while providing part can
With the parameter identification that the inside digitization system A ' based on the twin technology of number can be identified；The data of storage and management in c
Data category included in ontology a and knowledge body b and other description informations are covered, wherein in the form of data to mesh
Mark physical entity A is described；Data portal d establishes data/component/relationship etc. in ontology a, knowledge body b and data volume c
Index provides safety, interface that is quick and being convenient for maintenance and management, while including in digital space based on the twin skill of number
Interaction between the digitization system A ' of art and with other external digitization system A ' based on the twin technology of number, other systems
Between information interaction.Thus, ontology a, knowledge body b, data volume c and data portal d constitute a structure entirety, with number
The mode of change has carried out image building to target physical entity A.
The embodiment of the present invention two provides the specific of the construction method of the digitization system based on the twin technology of number
Embodiment, referring to Fig. 9, the construction method of the digitization system based on the twin technology of number specifically includes following content:
S1: the data space subsystem corresponding with the target physical entity is established；
S2: the body module, knowledge module and data module are added respectively in the data space subsystem；
S3: adding corresponding unit in the body module, knowledge module and data module respectively, and
Corresponding description information is added in each unit.
In S3, increase taxon, member unit and associative unit first in the body module, and at described point
Corresponding description information is added in class unit, member unit and associative unit；Establish the knowledge module and the ontology mould
Incidence relation between block, and believed according to the description in taxon, member unit and the associative unit in the body module
Breath adds knowledge model unit and information unit in the knowledge module；And in the data module, according to
The description information of the body module and the knowledge module, storage and management are by the body module and the knowledge body mould
The data of whole classifications in the lifecycle process of the target physical entity of data composition in block.
S4: it is established according to the body module, knowledge module and the data module in the data space subsystem
The data portal module.
In S4, according to the body module, knowledge module and the data module in the data space subsystem,
Response is established respectively for forming interface unit, service pool unit, indexing units and the safe unit of the data portal module.
Wherein, each information in the body module and the knowledge module is corresponding with unique identification；And it is described
Data module is based on data according to the corresponding unique identification of each information in the body module and the knowledge module
The mode of library table or computer semantic description carries out distributed storage to each information.
As can be seen from the above description, the construction method of the digitization system of the invention based on the twin technology of number, Neng Gouzhun
Really mapping relations between expression and physical entity, and system components and the definition of each section particular content can be specified,
And then the application standard of the twin technology of number is provided, it is designer according to physical entity own situation progress digital model
Providing method foundation is constructed, the application demand with important theory significance and reality.
For further instruction this programme, the present invention also provides a kind of structures of digitization system based on the twin technology of number
The application example of construction method, using the programming implementation method of object-oriented, in object-oriented method, object is attribute (data)
And the packaging body of the dedicated operations on these attributes, class are one group of object factories with same alike result and operation, succession is
A kind of fundamental relation between class refers to the inhomogeneous shared attribute in the level association of some class and the mechanism of operation.The stage
It needs to establish object, class for body module, knowledge module, data module respectively with data portal module and be associated with
System, the specific implementation steps are as follows:
(1) the realization process of body module is as follows:
Based on target physical entity, its corresponding digitization system based on the twin technology of number is established, ontology is established
Object model, and increase it classification, component and connection generic module, and description is added to it.
Using cam-type axial piston pump as ontological construction object, three generic modules are increased to cam-type axial piston pump.Point
Generic module: pump-hydraulic pump-plunger pump-axial plunger pump-cam-type axial piston pump.Component generic module: plunger, matches oil at cylinder body
Disk, transmission shaft, swash plate, piston shoes, return plate and central spring etc., composition parameter include plunger quantity, piston structure size, cylinder body
Size, oil distribution casing structural parameters etc..Connection generic module is divided into internal connection and external relation, internal connection: between each component
Installation link position, the revolving speed of the input and output such as speed of plunger 1 between component and transmission shaft 4 and the angle of swash plate 5 join
Several functional relations；External relation: by cam-type axial piston pump symbolically as a whole, in hydraulic system with other
The installation site of component part such as fuel tank, hydraulic cylinder, oil filter etc., prime mover is to the input torque and pump of pump to hydraulic cylinder/liquid
Functional relation between the output performance parameter of pressure motor.
(2) the realization process of knowledge module is as follows:
Corresponding knowledge body object is established, and establishes its being associated with Ontology, inherits the classification letter of Ontology
Breath.Description, addition model class and other knowledge classes are constituted according to knowledge body.
Its knowledge body object is constructed based on cam-type axial piston pump ontological construction object, inherits its classification information, is added
Knowledge model class and data class, the structure of knowledge include basic mathematic model and emulation mould referring to Figure 10, in knowledge model class
Type, the simulation model are made of related contents such as dynamic analysis, stress-strain analysis, analysis of fatigue and thermodynamic analysis；
The data class includes photo and program, and the photo is made of component photo and infrared photography machine testing photo, the journey
Sequence is CASPAR software program, wherein CASPAR software is the simulation analysis software specifically for axial plunger pump/motor, should
Software energy simulation analysis oil film thickness field, pressure field, temperature field and the surface deformation under pressure loading and Thermal Load.
(3) the realization process of data module is as follows:
Data volume object is established, according to the classification information of Ontology, calls the data class in ontology and knowledge body object
Not, time series data and mesh data progress distributed can be stored by database table or the mode of computer semantic description.
Its data volume object is constructed based on cam-type axial piston pump object, its Ontology information is inherited, calls it
The parameters of structural dimension of data category such as plunger in body, call data category in its knowledge body for example pressure, revolving speed, discharge capacity,
It is described as follows by the performance parameters such as flow, power and efficiency referring to table 1 with 2-D data library sheet form:
The partial parameters of 1 cam-type axial piston pump of table influence relationship
Note: where 1 indicates have an impact, and 0 indicates 0 to have been omitted from herein without the relationship of influence.
The example of data storage is as shown in table 2.
The partial data storage table of 2 cam-type axial piston pump of table (data are non-real real data)
(4) the realization process of data portal module is as follows:
Establish data portal object, obtain the classification information of Ontology, reduce the storage size of model, reduce system it
Between information transmission time, cost and speed, implementation model lightweight.Data in digitization system based on the twin technology of number
The data stored in body object are huge and complicated, if it is very low to will lead to treatment effeciency without good index process.Indexation is
Main body and signature analysis are carried out to data, assign the process of mark.For data portal object, all kinds of numbers of data volume object are established
According to index, to the content of the ontology of model, knowledge body and data volume object in the digitization system based on the twin technology of number
Quickly managed and maintained.Meanwhile safety is carried out point using Object Oriented Model Making Technology etc., by safety semantic meaning representation
The security model supported at Database Systems.
By taking cam-type axial piston pump as an example, data portal building includes response interface unit, service pool unit, index
Unit and safe unit.
One kind is achieved in that: response interface can be the interface based on Webservice；Servicing pool unit is by a system
The method based on webservice is arranged to constitute；Indexing units construct its data portal for cam-type axial piston pump object, after
Its Ontology information is held, index is increased to the Various types of data in its ontology, knowledge body object and data volume object, establishes ontology
Data are managed and are safeguarded as service-oriented interface by mark；Security module is responsible for recognizing in data exchange process
Card and authentication, guarantee safety.
As can be seen from the above description, the building side of the digitization system based on the twin technology of number in application example of the present invention
Method can provide clearly new approaches, method and practicable ways for the digital image for establishing physical entity in digital space, have
Feasibility, and construction method is simple and clear, it is easy to accomplish, while can be realized and be handed over external world's safety, quick, light weight information
Mutually, the scale development deployment for industry internet application provides data model support, and interconnecting for data is allowed to become existing
It is real, to promote the real landing of industry internet.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for hardware+
For program class embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to side
The part of method embodiment illustrates.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
Although this application provides the method operating procedure as described in embodiment or flow chart, based on conventional or noninvasive
The labour for the property made may include more or less operating procedure.The step of enumerating in embodiment sequence is only numerous steps
One of execution sequence mode, does not represent and unique executes sequence.It, can when device or client production in practice executes
To execute or parallel execute (such as at parallel processor or multithreading according to embodiment or method shown in the drawings sequence
The environment of reason).
Although this specification embodiment provides the method operating procedure as described in embodiment or flow chart, based on conventional
It may include either more or less operating procedure without creative means.The step of being enumerated in embodiment sequence be only
One of numerous step execution sequence mode does not represent and unique executes sequence.Device or end product in practice is held
When row, can be executed according to embodiment or method shown in the drawings sequence or it is parallel execute (such as parallel processor or
The environment of multiple threads, even distributed data processing environment).The terms "include", "comprise" or its any other change
Body is intended to non-exclusive inclusion, so that process, method, product or equipment including a series of elements are not only wrapped
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, product
Or the element that equipment is intrinsic.In the absence of more restrictions, being not precluded is including process, the side of the element
There is also other identical or equivalent elements in method, product or equipment.
For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each module can be realized in the same or multiple software and or hardware when specification embodiment, it can also be by reality
Show the module of same function by the combination realization etc. of multiple submodule or subelement.Installation practice described above is only
Schematically, for example, the division of the unit, only a kind of logical function partition, can there is other draw in actual implementation
The mode of dividing, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored,
Or it does not execute.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be by one
The indirect coupling or communication connection of a little interfaces, device or unit can be electrical property, mechanical or other forms.
It is also known in the art that other than realizing controller in a manner of pure computer readable program code, it is complete
Entirely can by by method and step carry out programming in logic come so that controller with logic gate, switch, specific integrated circuit, programmable
Logic controller realizes identical function with the form for being embedded in microcontroller etc..Therefore this controller is considered one kind
Hardware component, and the structure that the device for realizing various functions that its inside includes can also be considered as in hardware component.Or
Person even, can will be considered as realizing the device of various functions either the software module of implementation method can be hardware again
Structure in component.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It will be understood by those skilled in the art that the embodiment of this specification can provide as the production of method, system or computer program
Product.Therefore, in terms of this specification embodiment can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, it wherein includes computer available programs that this specification embodiment, which can be used in one or more,
Implement in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of code
The form of computer program product.
This specification embodiment can describe in the general context of computer-executable instructions executed by a computer,
Such as program module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, journey
Sequence, object, component, data structure etc..This specification embodiment can also be practiced in a distributed computing environment, in these points
Cloth calculates in environment, by executing task by the connected remote processing devices of communication network.In distributed computing ring
In border, program module can be located in the local and remote computer storage media including storage equipment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ",
The description of " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, structure, material
Or feature is contained at least one embodiment or example of this specification embodiment.In the present specification, to above-mentioned term
Schematic representation be necessarily directed to identical embodiment or example.Moreover, description specific features, structure, material or
Person's feature may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, in not conflicting feelings
Under condition, those skilled in the art by different embodiments or examples described in this specification and different embodiment or can show
The feature of example is combined.
The foregoing is merely the embodiments of this specification embodiment, are not limited to this specification embodiment.It is right
For those skilled in the art, this specification embodiment can have various modifications and variations.It is all in this specification embodiment
Any modification, equivalent replacement, improvement and so within spirit and principle, the right that should be included in this specification embodiment are wanted
Within the scope of asking.
Claims (10)
1. a kind of digitization system based on the twin technology of number, which is characterized in that the digitization system includes: to be in communication with each other
Data space subsystem and data portal module, data space subsystem and data portal module as a whole, constitute
The corresponding digitization system based on the twin technology of number of target physical entity；
It is mapping relations between the data space subsystem and target physical entity, and the data space subsystem is for storing
The data of the description information of the target physical entity, knowledge collection and whole classifications in lifecycle process；
Information exchange of the data portal module between the data space subsystem and external system provides communication
Interface, wherein include the target physical entity in the external system, also include the corresponding number of other physical entities
Change system and/or information system.
2. digitization system according to claim 1, which is characterized in that the data space subsystem includes: phase intercommunication
Body module, knowledge module and the data module of letter, and the body module, knowledge module, data module sum number
As a whole according to portal module, the corresponding digitization system based on the twin technology of number of target physical entity is constituted；
The body module is used to store function, the description information of performance and physical characteristic of target physical entity, and respectively to
Knowledge module, data module and data portal module provide retouching for the function of target physical entity, performance and physical characteristic
State information；
The knowledge module is for storing the corresponding knowledge collection of target physical entity indicated in the form of polymeric；
What the data module was made of for storage and management the data in the body module and the knowledge module
The data of whole classifications in the lifecycle process of the target physical entity.
3. digitization system according to claim 2, which is characterized in that the body module includes: taxon, component
Unit and associative unit；
The taxon is used to classify to the description information of the slave unit of the physical entity and the physical entity, and
Store classification information；
The member unit describes the component part of the target physical entity and the parameter of each component part for storing,
In, the parameter of the component part includes material data, geometric dimension data and performance data；
The associative unit is used to store the corresponding relationship in the target physical entity between each component part, wherein institute
Stating corresponding relationship includes the outside of internal relations and the target physical entity as a whole between each component part
Relationship.
4. digitization system according to claim 2, which is characterized in that the knowledge module includes: knowledge model list
Member and information unit；
The knowledge model unit is used to reflect the structure of knowledge of the target physical entity, including structure simulation model, electromagnetism
One in model, kinetic model, thermodynamical model, materials behavior evolutionary model, stress analysis model and Fatigue Damage Model
Kind or any combination；
The information unit is used in the form of structured data or non-structural data to the structure of knowledge of the target physical entity
It is described, including one of document, multimedia file and program or any combination.
5. digitization system according to claim 2, which is characterized in that the data module is used for the shape of data volume
Formula is classified and is associated in digital space to the data in the Life cycle of the target physical entity, and stores the classification
With associated result；
Wherein, the data volume is made of data organization relationship and data acquisition system；And the data volume be divided into time series data and
Non-sequential data.
6. digitization system according to claim 2, which is characterized in that the data portal module includes: response interface
Unit, service pool unit, indexing units and safe unit；
The response interface unit is for handling the body module, knowledge module and data module and the external system
Between interaction request；
The service pool unit is for handling service-oriented response；
The indexing units are for being indexed the information in the body module, knowledge module and data module；
The safe unit is for being authenticated and being authenticated to the process of data interaction.
7. a kind of construction method of the digitization system such as claimed in any one of claims 1 to 6 based on the twin technology of number,
It is characterized in that, the data space subsystem includes the body module being in communication with each other, knowledge module and data module；It is described
Construction method includes:
Establish the data space subsystem corresponding with the target physical entity；
Add the body module, knowledge module and data module respectively in the data space subsystem；
Corresponding unit is added in the body module, knowledge module and data module respectively, and in each list
Corresponding description information is added in member；
And institute is established according to the body module, knowledge module and the data module in the data space subsystem
State data portal module.
8. construction method according to claim 7, which is characterized in that described respectively in the body module, knowledge body mould
Corresponding unit is added in block and data module, and adds corresponding description information in each unit, comprising:
Increase taxon, member unit and associative unit in the body module, and in the taxon, member unit
With corresponding description information is added in associative unit；
The incidence relation between the knowledge module and the body module is established, and according to the classification in the body module
Description information in unit, member unit and associative unit adds knowledge model unit and data in the knowledge module
Unit；
And in the data module, according to the description information of the body module and the knowledge module, storage and
Manage the Life cycle for the target physical entity being made of the data in the body module and the knowledge module
The data of whole classifications in the process.
9. construction method according to claim 8, which is characterized in that in the body module and the knowledge module
Each information is corresponding with unique identification；
The data module according to the corresponding unique identification of each information in the body module and the knowledge module,
Mode based on database table or computer semantic description carries out distributed storage to each information.
10. construction method according to claim 7, which is characterized in that described according in the data space subsystem
The body module, knowledge module and data module establish the data portal module, comprising:
According to the body module, knowledge module and the data module in the data space subsystem, establishes ring respectively
Applied to interface unit, service pool unit, indexing units and the safe unit for forming the data portal module.
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