Research On LabVIEW Measurement And Control Platform Based On Real-time Ethernet Technology

At present, Real-time Ethernet technology and Virtual Instrument plays an important role. Real-time Ethernet technology copes out the drawback of the traditional field-bus and has become the new stage of development of the field-bus, virtual instrument technology promotes the establishment of of human-machine interface. The thesis proposes the LabVIEW measurement and control platform based on Real-time Ethernet technology and provides an example based on that platform.The development of measurement and control platform is reviewed, and derived the inadequacies. For these deficiencies, we proposed to build a program that about LabVIEW measurement and control platform based on Real-time Ethernet technology.The thesis introduces the related concept of measurement and control platform, the functional requirements analysis is done for platform. On the basis of the measurement and control functions of the platform, the overall architecture, hardware and software solutions were carried out research and analysis.The thesis analyses the relevant features and the general programming process of the LabVIEW, the internal mechanism and the preparation of the dynamic link library is resolved, and the process that how to create a DLL in LabVIEW is introduced. The EtherMAC driver module that based on LabVIEW is studied form the program, and the driver module is used in the design of the measurement and control platform.The multi-threaded and multi-tasking mechanism is a major feature in the LabVIEW language, the thesis analysis the implementation of the multi-tasking mechanism on the measurement and control platform. Based on the functional analysis, the motor control module, machine back to the zero module and data storage module is researched, and complete the implementation of the modular and systematic LabVIEW platform.Finally, use the above mentioned platform to develop a measurement and control platform about quenching. Based on EtherMAC and LabVIEW, the quenching platform has a good user interface, and the function includes motor control, I/O control, analog control, data acquisition and date preservation. The system fulfills the production requirements and works stably, verifying the correctness and feasibility of the theory.