View Judgment Research And Practice Based On AutoCAD Platform In Local Area Network

Our country CAI, passed through recent several years big scales the research and the development, has achieved the multiple perspectives and many kinds of form expressions and the reappearance to the knowledge using the text, the sound, the graph, the animation and the video image and so on carries on omni-directional. In recent years, engineering drawing CAI, although had the very big development, moreover the domestic university has done the much works in the engineering drawing CAI aspect, and develops one batch of CAI software. But these CAI software are demonstrated mainly and have the flaw in automatic judgment. Therefore develop the view automatic judgment system is very essential.This topic mainly involving the following several aspects: 1st, user's login and jurisdiction. The user include the manager, teacher user and student user. The different user has the different jurisdiction. 2nd, exercise database establishment and test question stochastic production. Student's test question stochastic carries on the extraction in the exercise database by the system. This may prevent student to cheat well. 3rd, test question preview. The student may carry on the preview to the test question before presenting the topic. 4th, the graph elements data extraction and automatic judgment. The elements mainly include the straight line, the circle, the circular arc, the ellipse and so on. This system extract the essential elements data, then compare to the standard answer one by one, and gives student's score and the errors situation analysis.The paper's cartographic is carries in AutoCAD platform, this need not to develop the software platform independently, moreover the student may display own level well. After the student has chosen the exercise, the system will open the exercise automatic through the interface in AutoCAD platform, then the student may start to do exercise. The system can give the judgment result after the student complete and put in the excise. The system analysis the "copy"situation in AutoCAD platform, it can prevent the student"copy"phenomenon occurrence.