Research And Development Of The Engineering Graphics Automatic Grading System

Engineering graphics examination is mostly carried out by written examination and operation on the computer to test the students' grip knowledge, so engineering graphics automatic recognition is one of the exigent problems in the current engineering course examination of the distance education. The development of the engineering graphics automatic grading examination system has great significance in developing the CAD technology ability, spreading the CAD technology and translating it into productivity.This paper mainly discusses how to research and develop the CAD engineering graphics test automatic grading system based on graphics database and external database technology with the Visual C++ IDE and Object ARX kit as the instruments. It describes emphatically the idea and arithmetic of implementing graphics automatic grading module, and the key technology of the extract properties of the entities and carry through pretreatment and processing during automatic grading. It also describes the framework, running environment and work model of the test system. Graphics automatic identifying is based on artificial intelligence technology and deals with the chock point problem of engineering course test of the distance education.Currently test and modification of the stand-alone release has been finished, the anticipative target has been implemented, all the function prospective demands have been met, and the stability of system has been tested.