Model conversion method and system from CAD (Computer Aided Design) system to three-dimensional checking system

A model conversion and three-dimensional technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as different CAD systems, inconsistent design model data formats, etc., to achieve reasonable resource utilization, save memory overhead, and data retrieval accurate effect

Active Publication Date: 2012-10-24
北京中科辅龙智能技术有限公司
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Problems solved by technology

[0007] The purpose of the present invention is how to provide a model conversion scheme from a CAD system to a three-dimensional proofreading system, so as to solve the problem that the different CAD systems used by each design specialty lead to inconsistent data formats of the design models of each specialty

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  • Model conversion method and system from CAD (Computer Aided Design) system to three-dimensional checking system
  • Model conversion method and system from CAD (Computer Aided Design) system to three-dimensional checking system
  • Model conversion method and system from CAD (Computer Aided Design) system to three-dimensional checking system

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Embodiment Construction

[0063] The invention proposes a model conversion method from a CAD system to a three-dimensional proofreading system based on an intermediate file. Generally speaking, CAD systems are used for model design, and the amount of information contained is large and complex, so the speed of model browsing is relatively slow. The proofreading system is read-only for information and will not change the original information of the model, and generally only needs graphics, engineering, topology, and classification information, and the browsing speed of the model is relatively fast. Common 3D review systems include: NavisWorks, SmartPlantReview and PDMS Review. The method of the present invention utilizes Object ARX to provide model export plug-ins for various professional CAD systems based on AutoCAD (such as the pipeline design system of Fulong, the electrical design system of Bochao, the water supply and drainage design system of Haochen, etc.), thereby realizing the model Export func...

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Abstract

The invention discloses a model conversion method and system from a CAD (Computer Aided Design) system to a three-dimensional checking system, relating to the technical field of three-dimensional checking technologies. The method comprises the following steps of: acquiring type information in a model from a type definition file; establishing an intermediate file and writing model information and design condition information into the intermediate file; traversing all types in the CAD model and writing classification information and engineering attribute meta-information to the intermediate file; traversing all objects in the CAD model and classifying the objects according to the types; outputting engineering information, topological information and geometric information for the objects oneby one according to the types; constructing a scene tree from the geometric information and the topological information stored by the intermediate file; and constructing a content classification treefrom the classification information and the engineering information stored by the intermediate file. The reconstructed model can support the three-dimensional checking system to finish main functionsunder the conditions of large patch data quantity, complex topology, complex classification and large engineering data quantity.

Description

technical field [0001] The invention relates to the technical field of three-dimensional proofreading, in particular to a method and system for converting a model from a CAD system to a three-dimensional proofreading system based on an intermediate file. Background technique [0002] In order to shorten the design cycle, improve design efficiency, and reduce design costs, the design mode of the process factory has gradually changed from the traditional serial or semi-parallel mode to a multi-design team, multi-professional participation, cross-regional, distributed parallel collaborative design mode. In the parallel collaborative design of process factories, each specialty should not only meet the design requirements of other professions in terms of space layout, process conditions, operation and maintenance, but also put forward its own requirements for other professions. After the design is finished, the reviewers should review the design results of each major, so as to di...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06F17/30
Inventor 唐卫清周剑李士才周肖彬黄晓剑
Owner 北京中科辅龙智能技术有限公司
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