CN102609417B - Engine device and method for data integration and exchange of building information mode based on IFC (industry foundation classes) standards - Google Patents
Engine device and method for data integration and exchange of building information mode based on IFC (industry foundation classes) standards Download PDFInfo
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Abstract
The invention belongs to the technical field of information of the building industry, and provides an engine device and a method for data integration and exchange of building information mode based on IFC (industry foundation classes) standards, which are used for creating and applying a building information model (BIM). The method is based on a BIM database created on the basis of the IFC standards and a relational database, and BIM resolution in an IFC format, conversion of building information in non-IFC formats, extraction and integration of BIM submodels and storage, exchange and access control of BIM data are realized. The engine device comprises an IFC entity library, an IFC file resolver, an IFC geometric model converter, a Project-IFC converter, a BIM submodel integrator, a BIM submodel extractor, a data access controller, a BIM data storage device, a BIM data extractor, an IFC file generator and the like. The building information model data integration and exchange engine device and the method support conversion of BIM data in various formats, and BIM data integration and exchange oriented to various stages of the life cycle of a building or different applications can be realized. In addition, BIM data integration and exchange efficiency is effectively improved by the aid of data batch processing technology.
Description
Technical field
The invention belongs to Information industry technical field, be intended to solve BIM (Building Information Model, BIM) establishment and application, be specifically related to a kind of with based on IFC standard and relevant database (Oracle, Microsoft SQLServer and MySQL etc.) the BIM database set up be basic, realize IFC form BIM model analyzing, non-IFC form architecture information transforms, BIM submodel extracts and integrated and BIM data storage, BIM data integration and the switching engine apparatus and method of exchange and the control of BIM data access.
Technical background
BIM is that the integrated data model of the various relevant informations of construction-engineering project, is the digital expression to engineering project facility entity and functional characteristic take 3-dimensional digital technology as basis.A perfect information model, data, process and resource that can connecting building project life cycle different phase, be the complete description to engineering object, can generally be used by the each participant of construction project.BIM has single project data source, can solve consistance and overall sharing problem between distributed, isomery project data, support between construction project lifetime different phase and different application systems that dynamic engineering information creates, management and shared, effectively promote whole efficiency and the level of IT application of building industry.
IFC (Industry Foundation Classes) standard is the product model standard for building engineering field of being issued in 1997 by international co-operation alliance (IAI, International Alliance forInteroperability).IFC standard has adopted EXPRESS language definition various entities in architecture information and the incidence relation of inter-entity, for setting up the standard that building products data representation and exchange are provided towards the BIM of building lifetime, is the technical standard of current leading BIM structure.
Due to the characteristic such as multistage and multi-party of building trade, one of difficult point of BIM technology application is the integrated of BIM data and exchange.For example, how BUILDINGS MODELS, structural model and equipment installation model that building, structure, the each Specialty Design of equipment create carry out data integration, form the complete design model that can be applicable to construction, operation stage; How structural design extracts desired data from BUILDINGS MODELS simultaneously, realizes information sharing, thereby reduces Data duplication input, improves design efficiency and quality.
A perfect BIM should comprise information and the data of building each stage of full lifetime, but BIM establishment and the application of building lifetime different phase for one or several specific range of application, relate to the local data in BIM often.For realizing stage by stage and application-oriented establishments BIM, originally research and propose and built sub-information model (sub-BIM) concept.Sub-BIM is the subset of Global B IM, is processor-oriented BIM information extraction and integrated basis.The present invention adopts IFC submodel view definition BIM metadata schema, sets up definitim flow and the storage format of submodel view, has realized the extraction of BIM subset data, integrated and exchange.Submodel view is described with XML language, has comprised the Access status information of entity type, entity attribute and attribute that definition submodel is relevant.Can from world model, extract required submodel data based on submodel view, by necessary expansion, generate the sub-BIM towards different application, also sub-BIM can be integrated in Global B IM.For example, in the time of structural design, need to from BIM, extract dependency structure design information, form structon model.The definition of sub-information model and application make model data extraction, transmission only limit to related data, can reduce data Concurrency Access, be conducive to keep data consistance, avoid data collision.
In current BIM application, conventionally adopt following three kinds of modes to carry out BIM data integration and exchange:
Existing mode 1, internal standard form based on software vendor carry out data integration and exchange.For example, the architectural design software RevitArchitecture of autodesk, inc. based on BIM technology, Structure Design Software Revit Structure, equipment installation design software Revit MEP, construction simulation and collision detection software Naviswork, all mainly carry out data exchange and integration by Autodesk internal standard form .rvt.There is following shortcoming in this mode:
1, cannot carry out data integration and exchange to the relevant BIM software of other software vendor;
2, cannot carry out Version Control;
3, be difficult to support multi-user collaborative work and synchronize modification;
4, be difficult to control subtly data access authority;
5, do not support the integrated of BIM submodel and exchange.
Existing mode 2, carry out data integration and exchange based on IFC file.Because which realizes easily, be widely used.The steel construction model that for example Tekla Structures Xsteel creates can export as IFC file, then Revit MEP imports this IFC file, in Revit MEP, rebuild steel construction model, and carry out equipment installation modeling based on this steel construction model, thereby the message exchange of implementation structure design and equipment installation design is with shared.There is following shortcoming in this mode:
1, cannot carry out Version Control;
2, can not support multi-user collaborative work and synchronize modification;
3, only support linear workflow;
4, be difficult to control subtly data access authority;
5, due to the understand difference of different application to IFC standard, easily cause loss of data;
6, do not support the integrated of BIM submodel and exchange;
7, along with in-depth or the scale of the project of design strengthen, IFC file increases magnanimity, and speed of information exchange and efficiency become bottleneck problem urgently to be resolved hurrily.
Existing mode 3, carry out data integration and exchange based on BIM server (BIM Model Server/Repository).Which adopts the central database that is arranged on server end to carry out BIM data storage and management.User extracts required information from BIM server, and extended model information when carrying out related application, then resubmits server by the model information of expansion, thereby realizes storage, management, exchange and the application of BIM data type.
Which can realize the modification of entity-oriented and follow the trail of, Version Control, and rights management, can support multi-user Cooperation and synchronous modification.But because needs are set up BIM server and corresponding database, and data storage, integration and access engine based on BIM server, technical difficulty is larger, and which is not yet applied at present.From the type of database classification adopting, the data integration based on BIM server and the mode of exchange comprise following three kinds:
Existing mode 31, BIM data integration and exchanged form based on relevant database.
Have Object Oriented Characteristic for BIM, which need to be set up the mapping relations of BIM data and relevant database bivariate table, and due to the complicacy of described mapping relations, its efficiency has to be optimized.But which can make full use of the relevant database such as Oracle, Microsoft SQL Server of each enterprise widespread use, there is the features such as cost is low, configuration is convenient, safe and reliable.
Existing mode 32, carries out BIM data integration and exchange based on object-oriented database.
Because BIM has Object Oriented Characteristic, application object-oriented database carries out the storage of BIM data and has application convenience, efficiency high.But object-oriented database is at the aspect such as data security and stability Shortcomings at present, and acquisition cost is higher, and is not used widely.
Existing mode 33, the database based on independent research carries out BIM data integration and exchange.
In conjunction with the characteristic of IFC standard or STEP standard, independent research database can be supported storage and the access of BIM data conventionally preferably; But because current correlation technique is not mature enough, cost of development is high, there is the problems such as data security, stability and complex transaction processing and batch data processing power deficiency, its application is greatly limited.
The external data integration management platform based on BIM server of issuing mainly contains the IFC Model Server of VTT Building and Transportand SECOM Co. exploitation at present, the EDM Model Server of Jotne EPM Technology exploitation, the Eurostep Model Server of the BIM Server (increasing income) of Building Smart exploitation and Eurostep exploitation.Wherein IFC Model Server belongs to mode 31, and other three platforms belong to mode 33.BIM server all has the following disadvantages at present:
1, not yet realize the BIM submodel integrated functionality towards stage and application.Existing BIM server is stored the BIM data (IFC file) of different phase or different application submission respectively, and a project forms multiple models, can not form a complete model.
2, data extraction efficiency is low.Be because need to carry out data query and extraction from multiple models on the one hand, do not adopt on the other hand batch data treatment technology.
3, do not provide the definition of BIM submodel and method for expressing.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, a kind of BIM data integration and switching engine apparatus and method based on IFC standard are provided, can be with based on IFC standard and relevant database (Oracle, Microsoft SQLServer and MySQL etc.) the BIM database set up be basic, realize IFC form model analyzing, non-IFC form architecture information transforms, the extraction of BIM submodel and integrated and BIM data storage, the functions such as exchange and access control, for building the integrated of the each stage B IM data of full lifetime, exchange, shared and application provides technical support, comprise the data of building lifetime different phase for building, complete BIM generator and the method for process and resource.
For achieving the above object, the invention provides a kind of BIM data integration and switching engine device based on IFC standard, apply this device and can realize data integration and the exchange based on BIM database, support collaborative work and the data access control of multi-user based on BIM.Wherein BIM database is a kind of relevant database based on IFC normalization, for store and management BIM data.This device comprises following assembly:
IFC entity storehouse: according to IFC outline, all kinds of entities and attribute thereof are defined with OO high level language, and all kinds of entities are set up respectively a container and are deposited the example of all kinds of entities in BIM model, for internal memory to information model express, organization and management, be convenient to model demonstration, check and call.
IFC document parser: be connected with described IFC entity storehouse, realization being read and resolving IFC file, and the form reconstruction model defining with IFC entity storehouse in internal memory.
IFC geometric model converter: be connected with described IFC entity storehouse, by definition data-mapping relation by .dxf, .3ds be converted into IFC form model with the common non-IFC form 3-D geometric model such as .obj, and with form reconstruction model in internal memory of IFC entity storehouse definition.
Project-IFC converter: be connected with described IFC entity storehouse, progress msg project management system being created by the data-mapping relation of definition is converted into IFC form progress msg, and the form reconstruction model in internal memory defining with IFC entity storehouse.
BIM submodel integrator: selected BIM submodel view is converted into data integration constraint condition, in fact this condition represents by setting up corresponding tables of data and its Sql statement that upgrades operation, deletion action and newly-increased operation being set, is convenient to BIM data-carrier store and directly applies.
BIM submodel extraction apparatus: selected BIM submodel view is converted into data and extracts constraint condition, this condition represents by the Sql statement of setting up tables of data and its query manipulation being set, is convenient to BIM data-carrier store and directly applies.
BIM data access controller: be connected with BIM submodel integrator and BIM submodel extraction apparatus, when system is carried out the extraction of BIM submodel or when integrated, according to the Output rusults of BIM submodel extraction apparatus or BIM submodel integrator, BIM database is conducted interviews, inquire about user right and the current state that checks out of related data (table and record).
BIM data-carrier store: be connected with described IFC entity storehouse, BIM submodel integrator and BIM data access controller, according to the every class entity in the Output rusults of the data integration constraint condition of BIM submodel integrator, BIM data access controller and IFC entity storehouse and the mapping relations of database bivariate table, BIM in internal memory is stored in BIM database, application data batch processing technology (for example simultaneously, ado.net) realize the batch storage of data and revise, improving BIM data storage and integrated efficiency.
BIM data extractor: be connected with described IFC entity storehouse, BIM submodel extraction apparatus and BIM data access controller, according to the every class entity in result and the IFC entity storehouse of the data extraction constraint condition of BIM submodel extraction apparatus, BIM data access controller and the mapping relations of database bivariate table, inquiry and extraction data from BIM database, and the form reconstruction model defining with IFC entity storehouse in internal memory.
IFC file generator: be connected with described IFC entity storehouse, realize and will export as IFC file with the BIM of IFC entity library format definition in internal memory, be convenient to other BIM application software and share data.
Further, described BIM data access controller comprises:
User right controller: according to user authority setting, control the access of user to BIM data; And in view of characteristic and the actual demand of BIM data component-oriented, described user right controller can be realized the user right control of recording rank.
Parallel access control device: adopt data to log on the mechanism of checking out, realize the Parallel access control that records rank.Its ultimate principle is as follows: in the time that a certain user need to revise a certain record, check out this record, other users cannot modify to the record checking out, and in the time that other users check the record checking out, remind this record to be checked out modification; When this user completes after modification, when save data, log on this record, after this other users just can check out this record and further revise.
The described BIM based on IFC standard integrated with switching engine device, adopt submodel view definition BIM submodel, realize towards BIM data integration and the exchange of building lifetime one-phase or a certain application.
The described BIM based on IFC standard integrated with switching engine device, (for example adopt batch data treatment technology, ado.net), realize the batch processing of BIM data integration and exchange, effectively improved BIM data integration based on relevant database and the efficiency of exchange.
A kind of BIM data integration and switching method based on IFC standard, the method can realize IFC form model, non-IFC form geometric model and project process model are integrated into BIM database, and from BIM database, extract desired data according to submodel view definition, export as IFC file.Wherein BIM data integrating method comprises the following steps:
Closer, described step 12 comprises the following steps:
Step 121: read and resolve submodel view, obtain the access mode (comprise read-only, read and write and ignore three kinds) of comprised entity type and attribute thereof;
Step 122: according to the mapping relations of comprised entity type and IFC model and BIM database bivariate table, determine the table of related BIM database, and set up corresponding tables of data in internal memory;
Step 123: based on the result of step 122, to comprised various entity types, according to the access mode of its attribute, the SQL statement of renewal operation, deletion action and the newly-increased operation of corresponding data table is set, for BIM database is operated.
Described step 14 comprises some steps:
Step 141: based on the result of step 12, according to the set up corresponding entity type of each tables of data, find corresponding physical containers in entity storehouse;
Step 142: based on the result of step 13, judge whether to access this table (whether there are access rights and whether check out), if can not this table, exit, otherwise continue;
Step 143: travel through all entities in corresponding physical containers, and result based on step 13, judge whether to access this record (whether there are access rights and whether check out), if can not access this record, carry out next record, if can access this record, this entity is mapped to corresponding tables of data;
Step 144: based on the result of above-mentioned steps, after the model in entity storehouse is all mapped to corresponding data table, can, for each tables of data batch processing all records wherein, realize the quick renewal of data; For the situations of a large amount of newly-increased data, can also applying in batches insertion technology (the Bulk Copy of for example ado.net), to realize batch data newly-increased.
The described BIM data integration based on IFC standard and the method for interchanging data of switching method comprise the following steps:
Closer, described step 21 comprises the following steps:
Step 211: read and resolve submodel view, obtain the access mode (comprise read-only, read and write and ignore three kinds) of included entity type and attribute thereof;
Step 212: according to the mapping relations of comprised entity type and IFC model and BIM database bivariate table, determine the table of related BIM database, and set up corresponding tables of data in internal memory;
Step 213: to various comprised entity type, according to the access mode of its attribute (only ignoring and two kinds of read-writes), the SQL statement of the query manipulation of corresponding tables of data is set, for extracting data from BIM database.
Described step 23 comprises some steps:
Step 231: based on the result of step 21, according to the set up corresponding entity type of each tables of data, the result based on step 13 judges whether to access this table, if can not, exit, otherwise continue;
Step 232: carry out corresponding query manipulation, carry out data extraction and store corresponding tables of data into;
Step 233: will the tables of data of all foundation be carried out after data extraction, set up BIM with the form in IFC entity storehouse according to the mapping relations of BIM database and IFC model in internal memory.
The described BIM based on IFC standard is integrated passes through to adopt submodel view definition BIM submodel with switching method, realizes towards BIM data integration and the exchange of building lifetime one-phase or a certain application.
The described BIM based on IFC standard is integrated (for example passes through batch data treatment technology with switching method, ado.net), realize the batch processing of BIM data integration and exchange, effectively improved BIM data integration based on relevant database and the efficiency of exchange.
The present invention can support the BIM data of multiple format to transform, for building full lifetime information creating, integrated, exchange and shared BIM data provide engine apparatus and method.
Accompanying drawing explanation
Fig. 1 is the overall application configuration diagram of the embodiment of the present invention.
Fig. 2 is a certain BIM submodel entity type relevant to IfcDoor (door) comprise in the embodiment of the present invention.
Fig. 3 is the process flow diagram of BIM data integrating method one in the embodiment of the present invention.
Fig. 4 is the process flow diagram of BIM data integrating method two in the embodiment of the present invention.
Fig. 5 is the process flow diagram of BIM data integrating method three in the embodiment of the present invention.
Fig. 6 is the workflow diagram of BIM submodel integrator in the embodiment of the present invention.
Fig. 7 is the workflow diagram of BIM data-carrier store in the embodiment of the present invention.
Fig. 8 is the process flow diagram of BIM method for interchanging data in the embodiment of the present invention.
Fig. 9 is the workflow diagram of BIM submodel extraction apparatus in the embodiment of the present invention.
Figure 10 is the workflow diagram that in the embodiment of the present invention, BIM data set is grown up to be a useful person.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is further described.
Fig. 1 is the overall application configuration diagram of the embodiment of the present invention, and a kind of BIM data integration and switching engine device based on IFC standard of the present invention in the drawings comprises following assembly: IFC entity storehouse 1, IFC document parser 2, IFC geometric model converter 3, Project-IFC converter 4, BIM submodel integrator 5, BIM data access controller 6, BIM data-carrier store 7, BIM submodel extraction apparatus 8, BIM data extractor 9 and IFC file generator 10.
IFC entity storehouse 1: according to IFC outline, apply OO high level language method and defined a series of entity types and attribute thereof, and set up a container and deposit the example of all kinds of entities in BIM model, for BIM data being expressed and are organized at internal memory.IFC document parser 2: be connected with IFC entity storehouse 1, for realizing the reading and resolving of IFC file, and the form reconstruction model defining with IFC entity storehouse 1 in internal memory.IFC geometric model converter 3: be connected with IFC entity storehouse 1, by definition data-mapping relation by .dxf, the common non-IFC form 3-D geometric models such as .3ds and .obj are resolved and are transformed, and the form reconstruction model defining with IFC entity storehouse 1 at internal memory.Project-IFC converter 4: be connected with described IFC entity storehouse 1, progress msg project management system being created by the data-mapping relational implementation of definition is converted into IFC progress msg, and the form reconstruction model in internal memory defining with IFC entity storehouse 1.BIM submodel integrator 5: selected BIM submodel view is converted into data integration constraint condition, in fact this condition represents by setting up tables of data and its Sql statement that upgrades operation, deletion action and newly-increased operation being set, is convenient to BIM data-carrier store and directly applies.BIM data access controller 6: be connected with BIM submodel integrator and BIM submodel extraction apparatus, when system is carried out submodel extraction to BIM database or when integrated, based on the result of BIM submodel extraction apparatus or BIM submodel integrator, BIM database is conducted interviews, inquire about user right and the current state that checks out of related data.BIM data-carrier store 7: be connected with described IFC entity storehouse, BIM submodel integrator and BIM data access controller, according to the every class entity in the Output rusults of the data integration constraint condition of BIM submodel integrator, BIM data access controller and IFC entity storehouse and the mapping relations of database bivariate table, BIM in internal memory is stored in BIM database, application data batch processing technology (for example simultaneously, ado.net) realize the batch storage of data and revise, improving BIM data storage and integrated efficiency.BIM submodel extraction apparatus 8: the BIM submodel view of selection is converted into data and extracts constraint condition, this condition represents by the Sql statement of setting up tables of data and its query manipulation being set, is convenient to BIM data-carrier store and directly applies.BIM data extractor 9: be connected with described IFC entity storehouse, BIM submodel extraction apparatus and BIM data access controller, according to the every class entity in Output rusults and the IFC entity storehouse of the data extraction constraint condition of BIM submodel extraction apparatus, BIM data access controller and the mapping relations of database bivariate table, inquiry and extraction data from BIM database, and the form reconstruction model defining with IFC entity storehouse in internal memory.IFC file generator 10: be connected with IFC entity storehouse 1, will export as IFC file with the BIM of IFC entity library format definition in internal memory, be convenient to other BIM application software and share data.
Fig. 2 is a certain BIM submodel entity type relevant to IfcDoor (door) comprise in the embodiment of the present invention.
This submodel comprises the entities such as IfcDoor (door), IfcDoorStyle (door type), IfcDoorPanelProperties (door-plate property set) and IfcRelDefinesByType (entity-type of relationship) as shown in the figure.The corresponding submodel view of this BIM submodel is as follows about the definitional part of IfcDoor:
According to this submodel view definition, OwnerHistory (owner history), Name (title) and the Description (description) of user to IfcDoor has modification authority, and other attributes are not revised to authority.When applying this submodel view and carrying out data integration, to existing door entity, if user revises OwnerHistory, Name and Description attribute, modification can be saved in to database, and will can not preserve for the modification of other attributes; For newly-increased door entity, system can be saved in database by all properties except Tag (its access mode is for ignoring Ignore).In the time utilizing this submodel view to carry out data extraction, to existing door entity, system can extract all properties except Tag; Also need to extract the attribute of its this entity for the attribute of these entity types of OwnerHistory.
Fig. 3 is the process flow diagram of BIM data integrating method one in the embodiment of the present invention.
In step 11, application IFC document parser reads IFC file, and the form reconstruction model defining with IFC entity storehouse in internal memory.
In step 12, chooser model view, and utilize IFC submodel integrator to be converted into data integration constraint condition, this condition represents by setting up tables of data and its Sql statement that upgrades operation, deletion action and newly-increased operation being set.
In step 13, based on the result of step 12, utilize BIM data access controller to conduct interviews to BIM database, inquire about user right and the current state that checks out of related data.
In step 14, according to the result of step 12 and step 13, utilize BIM data-carrier store by the result store of step 11 to database.
Fig. 4 is the process flow diagram of BIM data integrating method two in the embodiment of the present invention.
With described method one difference be, step 11 ' in, non-IFC form geometric model is read and transforms in application, and in internal memory with the form reconstruction model of IFC entity storehouse definition for subsequent step.
Fig. 5 is the process flow diagram of BIM data integrating method three in the embodiment of the present invention.
Described method one difference is, in step 11 " in, Project-IFC converter reads and transformation project progress msg, and is used for subsequent step with the form reconstruction model of IFC entity storehouse definition in internal memory.
Fig. 6 is the workflow diagram of BIM submodel integrator in the embodiment of the present invention, the i.e. detailed description of step 12.
In step 121, read and resolve submodel view, obtain the access mode (comprise read-only, read and write and ignore three kinds) of included entity type and attribute thereof.
In step 122, based on the result of step 121, contained submodel view entity type is stored in set CList; For example, the submodel view of showing for Fig. 2, CList should comprise IfcDoor, IfcDoorStyle, IfcRelDefinesByType, IfcDoorPanelProperties, IfcDoorLiningProperties and IfcPropertySet etc.
In step 123, CList is traveled through, each class entity in CList is processed.
In step 124, for current entity type and with the mapping relations of BIM database bivariate table, in internal memory, set up corresponding table tables of data.If adopt ado.net technology, tables of data is an object instance of System.Data.DataTable class.
In step 125, according to the access mode of current entity type all properties, the SQL statement of renewal operation, deletion action and the newly-increased operation of corresponding tables of data is set, for BIM database is operated.For example, the submodel view of showing for Fig. 2, the Sql statement operating for the renewal of tables of data corresponding to IfcDoor should only comprise the processing to OwnerHistroy, Name, Discription, but Sql statement of its newly-increased operation needs to process all properties such as GUID.
In step 126, for carrying out the attribute that integrated attribute type is entity, add its type to CList, so just can extract the property value of this entity attribute; For example, the submodel view of showing for Fig. 2, because the type of the OwnerHistory attribute of IfcDoor is IfcOwnerHistory, is entity type, OwnerHistory attribute needs to extract simultaneously, therefore needs to add IfcOwnerHistory to CList.
In step 127, judge whether CList travels through complete, if it is finish this flow process, otherwise continue traversal CList.
Fig. 6 is the workflow diagram of BIM data-carrier store in embodiment, i.e. the detailed description of step 14.
In step 141, based on the result of step 12, all tables of data that traversal is set up, and the corresponding entity type of definite current data table.
In step 142, the result based on step 13 judges whether to access this table, if cannot, exit, otherwise continue.
In step 143, the corresponding physical containers of current entity type in traversal entity storehouse, processes each entity instance.
In step 144, the result based on step 13 judges whether to access this record, if can not, exit this circulation, otherwise continue.
In step 145, this entity instance is added to Record according to mapping relations in corresponding tables of data.
In step 146, judge whether the traversal of current physical containers is finished, if it is finish current circulation, otherwise continue traversal.
In step 147, judge whether the traversal of all tables of data is finished, if it is finish current circulation, otherwise continue traversal.
In step 148, based on the result of above-mentioned steps, can, for each tables of data batch processing all records wherein, realize the quick renewal of data.For the situations of a large amount of newly-increased data, the batch insertion technology (BulkCopy of for example ado.net) can also application data base providing realizes batch data and increases newly.
Fig. 7 is the process flow diagram of embodiment of the present invention BIM method for interchanging data.
In step 21, selecting needs to extract and the corresponding submodel view of BIM submodel exchanging, and utilize BIM submodel extraction apparatus that selected submodel view is converted into data and extract constraint condition, this condition represents by the Sql statement of setting up tables of data and its query manipulation being set.
In step 22, based on the result of step 21, utilize BIM data access controller to conduct interviews to BIM database, inquire about user right and the current state that checks out of related data.
In step 23, the extraction constraint condition of the generation based on step 21 and the result of step 22, utilize BIM data extractor to inquire about database, extracts corresponding data, and the form reconstruction model in internal memory defining with IFC entity storehouse.
In step 24, utilize IFC maker that the result based on step 23 is write out to the file into IFC.
Fig. 8 is the workflow diagram of BIM submodel extraction apparatus in embodiment, the i.e. detailed description of step 21.
In step 211, application BIM submodel integrator reads and resolves submodel view, obtains the access mode (comprise read-write and ignore three kinds) of included entity type and attribute thereof.
In step 212, based on the result of step 121, contained submodel view entity type is stored in how much CList.
In step 213, CList is traveled through, each class entity in CList is processed.
In step 214, for current entity type and with the mapping relations of BIM database bivariate table, application ado technology is set up corresponding tables of data in internal memory.
In step 215, according to the access mode of current entity type all properties, the SQL statement of the query manipulation of corresponding tables of data is set, for database is carried out to data query and extraction; For example, the submodel view of showing for Fig. 2, should not comprise the processing to Tag attribute for the Sql statement of the query manipulation of tables of data corresponding to IfcDoor.
In step 216, for carrying out attribute integrated and that attribute type is entity, add its type to CList, so just can extract the actual value of this attribute.
In step 217, if CList and travel through completely finishes this flow process, otherwise continues than traversal CList.
Fig. 9 is the workflow diagram that in embodiment, BIM data set is grown up to be a useful person, i.e. the detailed description of step 23.
In step 231, based on the result of step 12, all tables of data that traversal is set up, and the corresponding entity type of definite current data table.
In step 232, the result based on step 13 judges whether to access this table, if cannot, exit, otherwise continue.
In step 233, according to the result of step 231, disposable batch extracting data store corresponding tables of data into from database.
In step 234, all records in traversal current data table, process each entity instance.
In step 235, the result based on step 13 judges the access rights to this record, if there is no authority, deletes this record, otherwise does not operate.
In step 236, judge whether the traversal of current data table is finished, if it is finish current circulation, otherwise continue traversal.
In step 237, judge whether the traversal of CList is finished, if it is finish current circulation, otherwise continue traversal.
In step 238, the mapping relations of the result based on above-mentioned steps and IFC model and relevant database, with form reconstruction model in internal memory of IFC entity storehouse definition.
Claims (10)
1. BIM data integration and the switching engine device based on IFC standard, this engine apparatus is take the BIM BIM database based on IFC standard and relational database foundation as basis, realize extraction and integrated and the storage of BIM data, exchange and the access control function of IFC form model analyzing, the conversion of non-IFC form architecture information, BIM submodel, for integrated, the exchange of building full lifetime each stage B IM data, share and application provides technical support, it is characterized in that, comprise following assembly:
IFC entity storehouse: according to IFC outline, apply OO high level language and define all kinds of entities and attribute thereof, and all kinds of entities are set up respectively a container and are deposited the example of all kinds of entities in BIM, for internal memory to BIM express, organization and management, be convenient to model demonstration, check and call;
IFC document parser: be connected with described IFC entity storehouse, realization being read and resolving IFC file, and the form reconstruction model defining with IFC entity storehouse in internal memory;
IFC geometric model converter: be connected with described IFC entity storehouse, by definition data-mapping relation by .dxf, .3ds be converted into IFC form model with the common non-IFC form 3-D geometric model of .obj tri-class, and the form reconstruction model in internal memory defining with IFC entity storehouse;
Project-IFC converter: be connected with described IFC entity storehouse, progress msg project management system being created by the data-mapping relation of definition is converted into IFC form progress msg, and the form reconstruction model in internal memory defining with IFC entity storehouse;
BIM submodel integrator: selected BIM submodel view is converted into data integration constraint condition, this condition represents by setting up corresponding tables of data and its Sql statement that upgrades operation, deletion action and newly-increased operation being set, is convenient to BIM data-carrier store and directly applies;
BIM data access controller: be connected with BIM submodel extraction apparatus and BIM submodel integrator, when system is carried out submodel extraction to BIM database or when integrated, based on the Output rusults of BIM submodel extraction apparatus or BIM submodel integrator, utilize BIM data access controller to conduct interviews to BIM database, inquire about user right and the current state that checks out of related data;
BIM data-carrier store: be connected with described IFC entity storehouse, BIM submodel integrator and BIM data access controller, according to the mapping relations of the every class entity in the Output rusults of the data integration constraint condition of BIM submodel integrator, BIM data access controller and IFC entity storehouse and database bivariate table by the model data store in internal memory in BIM database, application data batch processing technology realizes the batch storage of data and revises simultaneously, improves BIM data storage and integrated efficiency;
BIM submodel extraction apparatus: the BIM submodel view of selection is converted into data and extracts constraint condition, this condition represents by the Sql statement of setting up tables of data and its query manipulation being set, is convenient to BIM data-carrier store and directly applies;
BIM data extractor: be connected with described IFC entity storehouse, BIM submodel extraction apparatus and BIM data access controller, according to the every class entity in Output rusults and the IFC entity storehouse of the data extraction constraint condition of BIM submodel extraction apparatus, BIM data access controller and the mapping relations of database bivariate table, inquiry and extraction data from BIM database, and the form reconstruction model defining with IFC entity storehouse in internal memory;
IFC file generator: be connected with described IFC entity storehouse, realize and will export as IFC file with the BIM of IFC entity library format definition in internal memory, be convenient to other BIM application software and share data.
2. BIM data integration and the switching engine device based on IFC standard according to claim 1, is characterized in that, described BIM data access controller comprises:
User right controller: according to user authority setting, control the access of user to BIM data; In view of characteristic and the actual needs of BIM data component-oriented, described user right controller has been realized the user right control of recording rank;
Parallel access control device: adopt data to log on the mechanism of checking out, realize the Parallel access control that records rank.Its ultimate principle is as follows: in the time that a certain user need to revise a certain record, check out this record, other users cannot modify to the record checking out, and in the time that other users check the record checking out, remind this record to be checked out modification; When this user completes after modification, when save data, log on this record, after this other users just can check out these data and further revise.
3. BIM data integration and the switching engine device based on IFC standard according to claim 1, it is characterized in that, by adopting submodel view definition BIM submodel, realize towards BIM data integration and the exchange of building lifetime one-phase or a certain application.
4. BIM data integration and the switching engine device based on IFC standard according to claim 1, it is characterized in that, by adopting batch data treatment technology, realize the batch processing of BIM data integration and exchange, improved BIM data integration based on relevant database and the efficiency of exchange.
5. BIM data integration and the switching method based on IFC standard, the method has realized IFC form model, non-IFC form geometric model and project process model has been integrated into BIM BIM database, and definition is extracted desired data and generates IFC file from BIM database according to submodel, it is characterized in that, BIM data integrating method comprises the following steps:
Step 11, utilize IFC document parser to read IFC file, or utilize IFC geometric model converter to read and transform non-IFC form geometric model, or utilize Project-IFC converter to read and transformation project progress msg, and the form reconstruction model defining with IFC entity storehouse in internal memory;
Step 12, chooser model view, and utilize IFC submodel integrator to be converted into data integration constraint condition, this condition represents by setting up tables of data and its Sql statement that upgrades operation, deletion action and newly-increased operation being set;
Step 13, based on the result of step 12, utilizes BIM data access controller to conduct interviews to BIM database, inquires about user right and the current state that checks out of related data;
Step 14, according to the result of step 12 and step 13, utilize BIM data-carrier store by the result store of step 11 to BIM database.
Wherein step 12 comprises the following steps:
Step 121: read and resolve submodel view, obtain the access mode of comprised entity type and attribute thereof, comprise read-only, read and write and ignore three kinds;
Step 122: according to the mapping relations of comprised entity type and IFC model and BIM database bivariate table, determine the table of related BIM database, and set up corresponding tables of data in internal memory;
Step 123: to various comprised entity type, according to the access mode of its attribute, the SQL statement of renewal operation, deletion action and the newly-increased operation of corresponding tables of data is set, for BIM database is operated;
Described BIM data access controller in step 13 comprises:
User right controller: according to user authority setting, control the access of user to BIM data; In view of characteristic and the actual needs of BIM data component-oriented, described user right controller has been realized the user right control of recording rank;
Parallel access control device: adopt data to log on the mechanism of checking out, the Parallel access control of rank is recorded in realization, its ultimate principle is as follows: in the time that a certain user need to revise a certain record, check out this record, other users cannot modify to the record checking out, and in the time that other users check the record checking out, remind this record to be checked out modification; When this user completes after modification, when save data, log on this record, after this other users just can check out these data and further revise.
Step 14 comprises the following steps:
Step 141: based on the result of step 12, according to the set up corresponding entity type of each tables of data, find corresponding physical containers in entity storehouse;
Whether whether step 142: the result based on step 13 judges whether can visit data table, have access rights and check out, if can not, exit, otherwise continue;
Step 143: travel through all entities in corresponding physical containers, and result based on step 13, judging whether can Visitor Logs, whether there are access rights and whether check out, if can not, carry out next record, if can, entity is mapped to corresponding tables of data;
Step 144: based on the result of above-mentioned steps, after the model in entity storehouse is all mapped to corresponding data table, can, for each tables of data batch processing all records wherein, realize the quick renewal of data; For the situation of a large amount of newly-increased data, it is newly-increased that application batch insertion technology realizes batch data;
6. BIM data integration and the switching method based on IFC standard according to claim 5, is characterized in that, BIM method for interchanging data comprises the following steps:
Step 21, selecting needs to extract and the corresponding submodel view of BIM submodel exchanging, and utilize BIM submodel extraction apparatus that selected submodel view is converted into data and extract constraint condition, this condition represents by the Sql statement of setting up tables of data and its query manipulation being set;
Step 22, based on the result of step 21, utilizes BIM data access controller to conduct interviews to BIM database, inquires about user right and the current state that checks out of related data;
Step 23, the extraction constraint condition of the generation based on step 21 and the result of step 22, utilize BIM data extractor to inquire about database, disposable batch extracting corresponding data, and the form reconstruction model in internal memory defining with IFC entity storehouse;
Step 24, utilizes IFC maker that the result based on step 23 is write out to the file into IFC.
7. BIM data integration and the switching method based on IFC standard according to claim 6, is characterized in that, described step 21 comprises the following steps:
Step 211: read and resolve submodel view, obtain the access mode of included entity type and attribute thereof, comprise read-only, read and write and ignore three kinds;
Step 212: according to the mapping relations of comprised entity type and IFC model and BIM database bivariate table, determine the table of related BIM database, and set up corresponding table tables of data in internal memory;
Step 213: to various comprised entity type, according to the access mode of its attribute, the SQL statement of the query manipulation of corresponding data table is set, for extracting data from BIM database, the access mode of wherein said attribute is only ignored and two kinds of read-writes.
8. BIM data integration and the switching method based on IFC standard according to claim 6, is characterized in that, described step 23 comprises the following steps:
Step 231: based on the result of step 21, according to the set up corresponding entity type of each tables of data, the result based on step 13 judges whether to access this table, if can not, exit, otherwise continue;
Step 232: carry out corresponding query manipulation and carry out data extraction and store corresponding tables of data into;
Step 233: will the tables of data of all foundation be carried out after data extraction, according to the mapping relations of BIM database and IFC model, set up BIM with the form in IFC entity storehouse in internal memory.
9. BIM data integration and the switching method based on IFC standard according to claim 5, it is characterized in that, by adopting submodel view definition BIM submodel, realize towards BIM data integration and the exchange of building lifetime one-phase or a certain application.
10. BIM data integration and the switching method based on IFC standard according to claim 5, it is characterized in that, batch data treatment technology, realizes the batch processing of BIM data integration and exchange, has improved BIM data integration based on relevant database and the efficiency of exchange.
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