CN116522472B - Ship multi-specialty general data packet construction and transmission method - Google Patents
Ship multi-specialty general data packet construction and transmission method Download PDFInfo
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- 238000002372 labelling Methods 0.000 claims description 21
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Abstract
The application discloses a method for constructing and transmitting a multi-specialized universal data packet of a ship, which comprises the following steps: the construction of the multi-specialty general data package of the ship takes a three-dimensional model as a core, and a two-dimensional schematic diagram, design attributes, parameter characteristics, annotation views and local detailed diagrams are added to express the information of the specialty design, construction and inspection. In the transmission process of the multi-specialized universal data packet of the ship, the data transmission between the ship design institute and the ship building factory and the decoupling of the three-dimensional design environments of the two parties are realized through three steps of data packet extraction, data online transmission and data to factory reduction. The application has the beneficial effects that: the problem that the total digital design level and the total assembly digital construction level of the current ship industry are not matched is solved, and the workload of converting pictures after three-dimensional data factory development is reduced; the method solves the problem of data incompatibility caused by inconsistent three-dimensional environments of factories.
Description
Technical Field
The application relates to the field of ship design, in particular to a method for constructing and transmitting multi-specialty universal data packets of ships.
Background
The domestic large-scale ship development adopts a mode of separating design and construction, and after the product primary design and detailed design are completed by the overall design, design data are transmitted to a final assembly construction plant to continue production design and construction. Under the traditional two-dimensional design mode, the overall design mainly uses two-dimensional drawings and files to express and transmit design information, and along with the popularization and application of CAD/CAM technology, the design mode of each ship development unit is gradually changed from two-dimensional design to three-dimensional design, and the design expression and transmission method are correspondingly changed.
According to the difference of the application depth and the application range of three-dimensional design of each development unit, the design information expression mainly comprises the following three modes: firstly, a development unit taking two-dimensional design as a main part and three-dimensional checking as an auxiliary part, and design data are still expressed and transferred by using drawings and files; secondly, the three-dimensional design is adopted by the professions of the structure, the pipeline and the like, the development units of the two-dimensional design are still used by other professions, and the design data are expressed and transferred in a mode of mixing a three-dimensional model and a two-dimensional drawing file; thirdly, the whole ship adopts a unit of a whole three-dimensional design, and design data is expressed and transferred by adopting a three-dimensional model. With the comprehensive application of the three-dimensional design technology, the traditional two-dimensional expression and drawing transmission modes are replaced by full three-dimensional expression and model transmission modes.
At present, the method for designing information expression based on the three-dimensional model mainly has the following three defects: firstly, the three-dimensional design environment among all development units of the ship is not uniform, and the environment cannot be compatible after the ship design data are transmitted to a ship building factory; secondly, because the ship belongs to the typical representation of complex system engineering, the ship has the characteristics of numerous systems, huge component quantity and the like, and the workload brought by three-dimensional refined expression of all design information (especially the local detail information of parts) is huge, which is in contradiction with the short development period at present; thirdly, the digitization level of each assembly construction factory is uneven, the manual operation mode based on drawing files is mainly adopted in part of processing construction, and a large amount of data conversion and plotting work exists after the three-dimensional model is sent out.
Disclosure of Invention
In order to solve the problems of large modeling workload of partial complex local detail information and large workload of conversion pictures after three-dimensional data factory development in the ship three-dimensional design process, the application provides a method for constructing and transmitting a multi-specialized general data packet of a ship, which comprises the following steps: three-dimensional model, two-dimensional schematic, design attributes, parametric features, labeling views, and detail view data:
further, the three-dimensional model data includes the outline size, the position and the physical interface connection information of the hull structure/base through solid modeling expression.
Further, the two-dimensional schematic diagram data is based on a ship two-dimensional model library, and the ship logical connection relation, the system external interface and the schematic diagram internal interface information are expressed in a mode of library model layout, connection lines and two-dimensional labeling.
Further, the design attribute data is based on three-dimensional model data, and the attribute template expression comprises part standards, materials, specifications, characteristics, design and production units, weight center, external dimensions and physical interface design information.
Further, the parameter characteristic data is expressed by the three-dimensional design software self-carrying characteristic object and comprises technical requirements, part details, installation requirements and annotation information in the traditional two-dimensional drawing of the interface.
Further, the annotation view expresses key design information for part specification information, welding form, installation form, interface, length, angle and distance processing construction and field inspection required by setting positioning through model projection and three-dimensional dimension annotation.
Further, the detailed drawings express the special symbols or graphic information which is required to be supplemented in the technical requirements and the additional design information and comprises the local details of the parts through pictures.
A ship design data transmission method is used for realizing transmission of multi-professional universal data packets of ships, and comprises the following specific processes:
when the general data is extracted, various design information in the general data packet is stored based on XML, stp, cgr, pdf format, compressed into rar format and then named and transferred by the serial number of the original general data packet;
when the data is transmitted on line, based on a direct connection network between a ship design institute and a building factory, the rar data packet is split into a plurality of smaller units for on-line transmission by an automatic splitting technology, and closed-loop management of data transmission is realized by combining a ship design institute data issuing flow and a ship building factory data receiving flow;
when the data is reconstructed to the factory, the product structure tree and the nodes of each level are reconstructed based on the naming of the data packet, the stp or cgr model is imported into a model file of a corresponding node in the three-dimensional design environment recovery product structure tree of the ship building factory, the design attribute, the parameter characteristic and the labeling view information are reconstructed in the model file based on the data in the XML file, and meanwhile, the two-dimensional schematic diagram and the local detailed diagram are associated with the model, so that the recovery of the general data packet in the three-dimensional design environment of the ship building factory is realized.
The beneficial effects provided by the application are as follows: the problem that the total digital design level and the total assembly digital construction level of the current ship industry are not matched is solved, and the workload of converting pictures after three-dimensional data factory development is reduced; the detailed diagram is adopted to express partial complex local detail information in the design process, and the three-dimensional modeling workload is reduced on the basis that the overall design balance work and the design information expression transmission are not affected; and a set of data online transmission decoupled from the design environment is formulated, so that the problem of data incompatibility caused by inconsistent three-dimensional environments of factories is solved.
Drawings
Fig. 1 is a schematic diagram of a process of data transfer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be further described with reference to the accompanying drawings.
The application provides a method for constructing a multi-specialized universal data packet of a ship, which comprises the following steps: three-dimensional model, two-dimensional schematic, design attributes, parametric features, and annotation view data:
the three-dimensional model is mainly used for expressing the outline dimension, the position and the physical interface connection information of the ship body structure.
It should be noted that, the creation of the three-dimensional model usually needs to use a basic library as a basis, firstly, the definition of the external dimension information of the model is developed through a part design module of the three-dimensional design software and the external dimension information is entered into the library, and then the model in the basic library is called to develop the three-dimensional layout, so as to express the information such as the position of the model, the connection relation of the interface and the like.
The two-dimensional schematic diagram is mainly used for expressing principle information such as specifications of equipment/accessories/welding parts/outfitting parts/pipelines/air pipes/cables, logical connection relations, system external interfaces and the like.
It should be noted that, the definition of the two-dimensional schematic diagram generally needs to be based on a basic library, firstly, the definition and the storage of information such as two-dimensional symbol appearance, specification, interfaces and the like are performed, then two-dimensional layout and connection are performed by calling a library model, the logic connection relationship is expressed, and the system establishes the connection relationship between the external interfaces, the internal interfaces of the schematic diagram and the like and performs the definition by matching with two-dimensional labels.
The design attribute is mainly used for expressing design related information such as component standards, materials, specifications, characteristics, design and production units, weight center, external dimensions, physical interfaces and the like.
It should be noted that, design attribute definition relies on a three-dimensional model, firstly, various part attribute templates are defined, when various parts are defined, explicit design information is needed, and then, specific attribute values are defined by combining part model warehouse entry.
The parameter characteristics are mainly used for explicitly expressing annotation information in the traditional two-dimensional drawings such as technical requirement information, detail information, installation information, interface information and the like.
It should be noted that, the parameter features are based on the three-dimensional design software self-carrying feature objects, and the content is defined manually or by means of tools and is mounted in the part structure tree.
The annotation view is mainly used for expressing specification information, welding form, installation form, interface, length, angle, distance and other key design information for processing construction and field inspection required by shaping and positioning. .
The labeling view definition is formed by projecting or cutting a geometric model along a specific direction and at a specific position, and specifically comprises three-dimensional dimension labeling, three-dimensional character labeling and the like, and can be used for replacing a structural dimension diagram, a pipeline installation diagram, a cable laying diagram, a wiring table, an opening board diagram and the like after being printed similar to the view in a two-dimensional drawing.
As an extension, on the basis of the labeling view, a detailed view can be adopted. The detailed diagram is mainly used for expressing complex local details which have large modeling workload and have no influence on overall arrangement balance, and special symbols or graphic information which need to be supplemented in design information such as technical requirements, notes and the like is generally used in the expression of structure and equipment installation information. The detail definition requires that the two-dimensional detail picture be uploaded to a base library first, and then referenced by designating the detail number in the parameter feature.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a process of transferring ship design data; it comprises three processes:
general data extraction: the three-dimensional model, the design attribute, the parameter characteristic and the labeling view are all defined in the same model document, the two-dimensional schematic diagram and the local detail diagram are expressed in the two-dimensional document, the design attribute, the parameter characteristic and the labeling view information are recorded based on an XML format file when the general data packet is extracted, the geometric outline and the geometric size in the three-dimensional model are saved through a stp or cgr and other general formats, and the two-dimensional schematic diagram and the local detail diagram are saved based on pdf format. After data extraction is completed, related data are packed into a rar format, named by the original model number and transferred.
And (3) online data transmission: in the factory data online transmission process, due to the factors of bandwidth limitation, large single-time data distribution amount of products and the like, the integral transmission of the universal data packet cannot be realized, so that the universal data packet is split into a plurality of smaller single data packets for transmission based on the data packet compression and automatic splitting technology, and meanwhile, closed-loop management of online data transmission is realized by combining a ship design factory data distribution flow and a ship construction factory data receiving flow.
Data to factory reconstruction: after the ship building factory receives the data packet, reconstructing a product structure tree and nodes of each level based on the naming of the data packet, restoring the model file of the corresponding node in the product structure tree by importing the stp or cgr model into the three-dimensional design environment of the ship building factory, reconstructing information such as design attribute, parameter characteristics, labeling view information and the like in the model file based on the data in the XML file, and simultaneously associating the two-dimensional schematic diagram and the local detailed diagram with the model to realize the restoration of the general data packet in the three-dimensional design environment of the ship building factory.
After the universal data packet is reconstructed to the factory, two application modes of three-dimension and two-dimension are formulated for application requirements of different scenes, and two modes of traditional manual construction and modern digital construction are compatible.
The method is aimed at production designers and quality inspection department personnel, and based on the three-dimensional design environment of a ship building factory, three-dimensional models, design attributes, parameter characteristics, labeling views and local detailed view information in a general data packet are selectively displayed, unnecessary design process information is shielded, key information such as overall dimensions, model specifications, arrangement positioning, interface connection and the like related to construction is rapidly acquired, and the on-site development of production design and quality inspection is guided;
the method is oriented to workshop stations and narrow space constructors, two application modes of a PDF album and a PAD handheld terminal are established, flexible display of structure, management, air pipes, electric, equipment installation, fitting-out professional construction and inspection data is achieved, the PDF album converts a labeling view and a local detailed view into a PDF format and prints the PDF format into a paper two-dimensional image to guide site construction and inspection, and the PAD handheld terminal displays the three-dimensional model, the labeling view and the local detailed view information in a general data packet based on the data converted from the three-dimensional model, the labeling view and the local detailed view information into 3DXML format data.
The key points of the application are as follows:
1. the information expression method in the general data packet is selected according to the actual expression requirement of design information, wherein a geometric model, model attributes, reference characteristics and labeling views are necessary options, the schematic diagram is mainly used for expressing the design principles of a pipeline system, an air pipe system and an electric system, and the detailed diagram is mainly used for expressing local detailed information such as structural design, equipment installation and the like, technical requirements, and special symbols or graphic information which need to be subjected to supplementary explanation in the design information such as notes and the like.
2. The labeling view is formed by projecting or cutting the geometric model along a specific direction and at a specific position, adding key size and positioning information, labeling, and the view is in homologous and modified linkage with the geometric model data, and can directly replace the traditional two-dimensional drawing as a building and checking basis after printing.
3. During data transmission, the three-dimensional geometric model and the two-dimensional schematic diagram, model attribute, parameter characteristic, labeling view and detail drawing which are related to the three-dimensional geometric model are packed and transmitted to a ship building factory.
In combination, the application has the beneficial effects that: the problem that the digital design level and the digital construction level of the current ship industry are not matched is solved, and the workload of converting pictures after three-dimensional data factory development is reduced; the detailed diagram is adopted to express partial complex local detail information in the design process, and the three-dimensional modeling workload is reduced on the basis that the overall design balance work and the design information expression transmission are not affected; and a set of data online transmission decoupled from the design environment is formulated, so that the problem of data incompatibility caused by inconsistent three-dimensional environments of factories is solved.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (1)
1. The utility model provides a ship design data transmission method, which is used for realizing the transmission of a ship multi-specialized general data packet, wherein the construction process of the ship multi-specialized general data packet is as follows:
the multi-specialty general data packet uses a three-dimensional model as a core, and expresses the information of each specialty design, construction and inspection in the forms of an additional two-dimensional schematic diagram, design attributes, parameter characteristics, a labeling view and a local detailed diagram;
the three-dimensional model expresses the physical dimension, position and physical interface connection information comprising a hull structure through solid modeling;
the two-dimensional schematic diagram data is based on a ship two-dimensional model, and the information including ship logic connection relation, system external interfaces and schematic diagram internal interfaces is expressed in modes of model layout, connection and labeling;
the design attribute data is based on a three-dimensional model, and the design attribute data comprises part standards, materials, specifications, characteristics, design and production units, weight center, external dimensions and physical interface design information through attribute template expression;
the parameter characteristic data is expressed by a data object of three-dimensional design software and comprises technical requirements, part details, installation requirements and annotation information in an interface traditional two-dimensional drawing;
the annotation view is formed by projecting and sectioning a three-dimensional model, and combining three-dimensional space annotation expression, wherein the annotation view comprises key information of part specification information, welding form, installation form, interface and length, angle and distance processing construction and field inspection required by shaping and positioning;
the detailed diagram expresses special symbols or graphic information which comprises local details of parts, technical requirements and supplementary explanation in the attached design information through pictures, and is characterized in that: the specific process is as follows:
when data are extracted, the ship design institute stores various design information in the general data packet based on XML, stp, cgr, pdf format, compresses the information into the rar format and then transmits the information according to the serial numbers of the original multi-specialized general data packets of the ship;
during data transmission, the ship design institute splits the rar data packet into a plurality of smaller units for online transmission by an automatic splitting technology based on a direct connection network between the ship design institute and a ship building factory, and simultaneously realizes closed-loop management of data transmission by combining a ship design institute data issuing flow and a ship building factory data receiving flow;
after the data arrives at the factory, reconstructing a product structure tree and nodes of each level based on the data packet numbers, restoring model files of corresponding nodes in the product structure tree by importing stp or cgr models into a three-dimensional design environment of a ship building factory, reconstructing design attributes, parameter characteristics and labeling view information in the model files based on the data in the XML files, and simultaneously associating a two-dimensional schematic diagram and a local detailed diagram with the models to realize the restoration of the general data packet in the three-dimensional design environment of the ship building factory.
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