| In the nonmetal film production, there is an important significance to detect film thickness online. This paper aims at the research on nonmetal film production line. From collectivity design to software, hardware system are stated detailedly, also, stated design idea and realization of every module, including PLC program design, data acquisition module, data processing & analysis module ,data graphical display module, data storage & output module, communication module etc.In the software construction, the system interface is exploited by Visual Basic that has good visual effect and is easy to be learned. Visual Basic can largely shorten its exploitation cycle, reduce cost, easily be maintained, easy to realize user's user-defined function, create friendly user interface.There is direct guiding sense to study on the other production line for detecting and controlling online. Referring to design thought and method of these modules, users can quickly exploit detecting and controlling software that they need. |