Research And Realization Of Virtual Instrument System For Automatic Temperature Calibration

With the development of science and technology, the application of electronic measurement technology has extended to more fields than before. Due to limited functions and big size, traditional electronic measuring equipments are no longer suitable to demand of measurement in practice. With the rapid development of integrated circuit and computer technology, a new kind of instrument, Virtual Instrument(VI), came into being in the end of the 80s. Compared with traditional equipment, VI characterizes with more functions, higher processing speed, higher efficiency and better expandability. As the integration of computer technology and modern instrument technology , virtual instrument make the revolutionary breakthrough in the measuring theory and technique of the conventional instrument.The temperature calibration system based on virtual instrument is developed by combining virtual instrument and the technology of temperature calibration in this paper. The development and status about temperature calibration technologies are fist summarized, and the research necessity of temperature calibration system is pointed out. Then the development and outstanding characteristic of virtual instrument are deeply presented, and the designing method and realization of the temperature calibration system are discussed in detail subsequently, including those of data acquisition, datadisposal, data storage and management. The improvement of measure precision, calibration reliability and work efficiency is testified by the practice of the system that validates the correctness and feasibility of the design idea and method and shows the superiority and brighter development foreground of Virtual Instrument than traditional instrument. Finally all the work of this dissertation is summarized and the future research work is Prospected.