| This thesis is based on "Noncontact Temperature Measuring and Controlling System Based on Virtual Instruments Technology" from my upper student. That thesis mainly researched how to realize noncontact temperature measuring in textile industry using virtual instruments technology. I took part in the whole research and experiment of that measuring system, so I had many ideas about it. Therefore, based on original research process and results, I made deep research on this noncontact temperature measuring system. In addition, combining data acquisition card-USB 6008 with my own circuit board platform, I realized real-time acquisition and control of the temperature. Based on original software functions, I also reprogrammed the software application and added many functions to it.This thesis was divided into seven chapters:The first chapter mainly discussed the background of this research, and then briefly presented the development of virtual instruments technology.The second chapter presented basic theory of this system at first, and then proposed an integral conception and project of improving and perfecting the system, aiming at original measuring system.The third chapter narrated programming technology of LabVIEW and data acquisition technology. These technologies would be used in the fifth chapter, so this chapter would help readers to gain a better understandability of this research.The forth chapter explained the hardware and software of the original system, and then analyzed its advantages and disadvantages.The fifth chapter researched digital filters and automated control methods, including PID control and fuzzy control.The sixth chapter bated around the specific process of debugging and simulating the measuring and controlling system. Among this thesis, this chapter had the most creative points and the deepest content as well.The seventh chapter gave a brief summarization and prospected for the application field and development future of virtual instruments technology.Based on the original research, this thesis had many innovations and improvements of hardware and software. Innovations of hardware were: self-made circuit board for debugging the measuring and controlling system; improvements of software were: research on fuzzy logic controller, connection between LabVIEW and Office, and developing Windows menu bar in LabVIEW (See the sixth chapter). Because the original research couldn't realize the whole system, compared with it, my research was much better. Temperature measuring and controlling were realized in my research, as well as historical data recording and saving. Besides, it had many innovations in hardware platform building and software programming of user interface. |
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