The Research Of Measure & Control System Based On COM Technology

There have some problems, for example, share the data source of all sort of the measurement of equipment, develop new application system quickly, have high stability and maintain convenient, which must be resolved immediately in the measurement and control system now used, because of the widespread and rapidly development of computer technology, constantly development of automatically industry and the fast evolution of soft technology. An effective method to resolve these problems is that makes the application procedure modular, and then forms new application with the modules. The COM technology and the system of measurement and control are researched deeply in this text with the three coordinate measurement machine. The whole paper includes two main parts:The first part analyses completely the characteristic of the COM technology and researches the structure of the three coordinate measurement machine, and then presents a new soft system of the three coordinate measurement machine with COM technology. A system model ofthe measurement and control based on client/server model with COM technology is designed with utilizing the COM technology's merit and conjoining the characteristic of the system. The communication between the procedures is come through the COM technology taken the replace of DDE.The second part is to use the COM technology for designing the system of measurement and control. The components are built and then used with Visual C++. To research how the COM component connect with the database. At the last, an example is made to show that the local-process and the remote-process component communicate with the client. After the research and test, it expresses that the system have good expansibility, built quickly and share the resources with each other. Instability of the system and the communication of the procedures are resolved.