我国CAI经过前几年较大规模的研究与开发，己较好地实现了利用文字、声音、图形、动画和视频图像等对知识 进行全方位、多角度和多种形式的表示和再现。近年来，工程制图CAI有了很大的发展，而且国内高校在工程制图CAI 方面做了大量工作，并开发出一批CAI软件，但这些CAI 软件以演示型居多而在绘图题练习和习题自动评判等方面还存 在缺陷，因此开发视图自动评判系统显得十分必要。 本课题主要涉及到以下几个方面：1、用户的登录和权限设置。其中用户有管理员，教师用户和学生用户。不同的 用户拥有不同的权限；2、习题数据库的建立和试题的随机生成。学生的试题由系统在习题数据库中随机的进行抽取。 这样可以很好的预防学生的作弊问题。3、试题的预览。学生在做题之前可以对试题进行预览。 4、图形中图元的数据 提取和自动评判。图元主要涉及到直线、圆、圆弧、椭圆等。本系统对图元的关键数据进行提取，然后和标准答案一一 比较，从而给出学生的得分和错误情况分析。 本论文的制图环境是AutoCAD平台，这样既不用自主开发软件平台，而且学生可以在熟悉的环境下更好的发挥自己的 水平。学生选择习题后，系统将自动通过接口将习题调入AutoCAD中并打开，然后学生就可以开始做题了。学生做完试题 提交之后，系统可以对试题进行自动评判，并给出评判结果。本系统对AutoCAD平台中拷贝现象进行了分析，能够很好的 预防学生抄图现象的发生。

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.