Research And Design Of The Embedded Reconfigurable Remote Measurement And Control System

The reconfigurable manufacturing system will be the next generation manufacturing pattern. In this dissertation, the reconfigurable problems of measurement and control links in reconfigurable manufacturing systems are studied. The problems are studied in the following contents:the total structure of the reconfigurable measurement and control systems, locale measurement and control units and host monitoring software.In the following parts ,the details are introduced.Firstly, the working principles of the reconfigurable measurement and control systems are analysed and the total structures of reconfigurable remote measurement and control systems are proposed and the following implementing methods are proposed: the measurement and control cards'(data acquisition cards, digital I/O cards etc) reconfiguration, the locale measurement and control devices' reconfiguration on system level and the host reconfigurable monitoring software.Secondly, in order to solve the reconfigurable locale measurement and control devices' designing problems, several kinds of common embedded devices' reconfigurable designing methods are analyzed, and then this dissertation proposes the designing methods based on script and process functions according to configuration software designing principles.On the basis of the above methods, the locale reconfigurable measurement and control device is designed based on PC104 to put reconfiguration of the measurement and control cards and system level reconfiguration of the locale measurement and control equipment devices into reality.Thirdly, in order to solve the reconfigurable monitoring software' designing problems, the methods in using virtual instrument technique to design monitoring software are proposed and then a series of monitoring sub VIs are extended by the LabVIEW 's CIN nodes. The users can reconfigured their own' measuring and controlling software according to present tasks by using such sub functions.Finally, in order to prove the effect of the researching works, a prototyping system is designed by using the reconfigurable locale measurement and control devices, the host computer running the reconfigurable monitoring software and the distributed measurement and control network to control the materials conveying process in manufacturing systems. It is proved that the system is well flexible and can meet with the requirements of the manufacturing systems.