Research On Web-based Heterogeneous Graphics Middleware Systems

Nowadays, several CAx application systems have been often using at the same time in one manufacturing enterprise. These software products developed by different software developers have some differences between them, which consequently result that enterprises have to be up against the heterogeneous-data problems produced by different application systems and makes an obstacle to achieve product data information's sharing and integration. Furthenjnore, these application systems were developed based on C/S model, the insufficiency of C/S model makes a burden of economy to enterprises and an obstacle to use the softwares. Aim at these problems: a solution of web-based heterogeneous graphics middleware system is put forward in this thesis. We adopt STEP as the bridge of product data information's intercommunion and use Java?XML as technical basic to develop a middleware based on B/S model, which can achieve product data information's intercommunion and sharing in network.In order to implement the web-based heterogeneous graphics middleware system, several key technologies and techniques are studied in this thesis.a. The solution to heterogeneous applications. The middleware developed based on B/S model is the solution to heterogeneous applications.b. The intercommunion technology of heterogeneous product data information.The model of product data's integration and STEP is the technical basic of this problem.c. The web-based heterogeneous graphics middleware system. The framework of web-based heterogeneous graphics middleware system is put forward, Java?XML is used as the technical basic to develop the system.d. Several key technologies and techniques. The key technologies and techniques in system developing including transform from ISO 10303-21 to ISO 10303-28, pick-up concerned product data [information from ISO 10303-28, transaction of information and visualization of product data information.e. A prototype. This prototype can be used to browse some product data information of simple parts produced from CAD system.