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Study on Automatic Judgement Technology of AutoCAD Three-dimensional Graphics Based on Unit Test Mode

Author: XuJinZuo
Tutor: YangSongLin
School: Hebei University of Science and Technology
Course: Mechanical Manufacturing and Automation
Keywords: Standardized tests AutoCAD Three-dimensional graphics Automatic Judge
CLC: TP391.72
Type: Master's thesis
Year: 2011
Downloads: 36
Quote: 1
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Abstract


With the rapid development of the national economy , CAD technology is widely used in our walks of life , and become an important tool for business innovation , and thus the state and society has urgent needs of CAD technology talent . Teaching CAD as an important means of a culture CAD technology talent , has become an important part of the teaching content of CAD engineering drawing , computer exam is gradually becoming an important form of engineering CAD exam , accompanied by large quantities of different content , form the same CAD standardized test papers automatically judge to replace time-consuming , error-prone manual evaluation into the problem must be solved . AutoCAD 3D graphics mode for a unit test automated assessment technology to expand research and teaching for three-dimensional CAD training and evaluation to provide reliable scientific basis . In reference AutoCAD 2D 3D pattern recognition than the study based on the AutoCAD 3D graphics for unit test mode automatically judge the key technologies are studied in detail , the main contents include: ( 1) three-dimensional CAD test unit and sample analysis ; monitoring technology (2 ) testing process ; (3 ) automatic graphics data acquisition technology research ; ( 4 ) test pattern data with the standard answer graphical data evaluation technology research ; ( 5) the position of the test pattern to determine technology research ; (6) evaluation process automation and integration technology research ; (7) the three-dimensional CAD drawings automatically judge the system pre-development . In this paper, the VB, Vlisp programming language as a tool , the use of graphics format conversion technology , graphical data traversal search methods , (1) the 3D DWG drawings bulk automatically open ; (2) DWG to the SAT , DXF data format automatically converted ; (3 DXF file graphics ) SAT data traversal search ; ( 4 ) three-dimensional graphics data collected automatically ; (5) Access database graphic data is automatically stored . Final study showed that : AutoCAD 3D graphics can be developed based on the unit test mode automatic evaluation system , automatically judge and output functions , the evaluation results in line with the artificial evaluation requirements , which replace the manual time-consuming and error-prone for the development of three-dimensional graphics . the automatic evaluation system provides a good objective basis ; laid an important foundation for the realization of the network , automation , paperless 3D CAD standardized tests its automated assessment system development .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Machine-assisted technology > Machine -aided design (CAD), aided drawing
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