The Virtual Instruments In The Application Process Automation Engineer Training

Automatic instruments play a very important role in modern industry, and the performance of instrument selection is one of critical indicators to judge the level of automation. The basic requirement for a qualified engineer includes knowledge about connection between input and output and failure analysis, common instruments selection techniques. However, so far as we can see, the teaching method for domestic automation engineers deviate from practice, and performance to combine theoretical study to practical instrument selection does not meet requirements.To find the solution of these problems above, I spent a lot of time on mechanism analysis and dynamic simulation modeling for automatic instruments, collecting domestic instrument product information, established database for automatic instruments and program application for instrument automatic selection.Automatic instruments in the research includes regulate vales, pressure sensors, temperature sensors, flow sensors and level sensors.The specific research contents and research result as follows: 1) Mechanism analysis and dynamic simulation modeling for common automatic instruments, including the solution for modeling, mechanism analysis and model simulation and so on;2) Model simulation for instrument was implemented with C++, whose advantage includes fast response and better transplantation. Design pattern as construction mode created UML with mathematical models, and models was built on case analysis, sequence and design diagram;3) Collecting automatic instruments from major domestic manufacturers, building product database for user search, add or delete information function.4) With virtual instrument design method, I engaged model simulation on automatic instrument, including normal parameters analysis, curve output and control valve fault simulation analysis.5) Instrument automatic selection application was completed for link simulation models and product database. By parameters configuration, user will get simulation curve from different products. It will facilitate user to select the most appropriate instrument and be benefit to improve efficiency for automation engineers.