Design of Virtual Pt - resistance ThermoscopeWU Qiang Yangling School, Changzhou Institute of Technology, Changzhou 213002 Abstract:Some deficiencies existing in traditional way of Pt - resistance temperature measurement instrument are analyzed here, on the basis of which the virtual Pt - resistance temperature measurement instrument is designed by means of graphical programming language LabVIEW. With the help of computer software, the temperature measurement system realizes digital filtering and implements the nonlinearity compensation to show live temperature value. Meanwhile, it also has some information management functions such as generating temperature trend curves, temperature statistical histograms, and historical data inquiry, etc. The experimental results indicate that the system is simple in its structure, with good interface, precise measurement, which is able to fulfill the needs of industrial measurement.[著者文摘]