Research On Extending X3D Standard For Remote Monitoring And Control

The integration of Remote Monitoring and Control Techniques and the Virtual Reality Techniques is an important subject in researches in Industrial Monitoring and Control Field. X3D (eXtensible 3D) standard is widely applied to create interactive three-dimensional world through the Internet. The thesis researches some problems of extending X3D standard based Remote Monitoring and Control Techniques. With the beginning of analyzing actual application and extended application of X3D Techniques in Industrial Monitoring and Control Field, the thesis researches the methods of extending X3D standard based the toolkits of X3DtoolKit and OpenVRML respectively and designs a prototype system based OpenVRML. The main content is introduced in detail as follows:Firs of all,after having analyzed the actual application mode of X3D Techniques and existent problems in Industrial Monitoring and Control Field, the thesis defines the X3D Communication Component so that extending interactive interface of X3D system and achieving seamless link of X3D Techniques and Remote Monitoring and Control Techniques.Secondly, after having researched on methods of creating new nodes and processors of X3D standard based an open source toolkit named X3DToolKit, the thesis designs an application instance in which the size field of Box node can be modified directly by keyboard.Thirdly, the thesis defines NetSensor node and DataSensor node which are used for data interacting through Internet or local applications. These nodes make Virtual Scene Graph can communicate with external monitoring and control applications directly. Otherwise, the thesis mentions consepts and methods of designing intelligent Monitoring Unit Nodes, and designs a VRML/X3D browser based MFC.Finally, the thesis designs a prototype system named remote monitor and control"The platform of process control experiment"based extended OpenVRML. This prototype system has a definite applied value.With X3D Communication Component, it is much easier to integrate X3D techniques with Industrial Monitoring and Control applications and to make X3D applied more freely and offer the applications much better environment to communicate, so X3D based Remote Monitoring and Control Techniques have great academic significance and promising applied prospect.