Temperature industrial processes one of the most common physical quantities. Temperature control is the process of industrial production is an important aspect of its safety, quality control, production efficiency, energy conservation of great significance, therefore, temperature measurement in science and technology research and production practice is very important. Researchers often need for some objects, the medium temperature detection and control, which itself is a series of temperature measurement experiments. In fact, the temperature measurement technology advances will greatly enhance the promotion of science and technology development; in turn, advances in technology and theory will raise the level of temperature measurement, temperature measurement technology have improved create good conditions for improvement.
The thesis of a Lab view based on the virtual thermal resistance temperature measurement instrument, which is the thermal resistance change with temperature resistance characteristics to measure the temperature, through the computer with the capture card, the non-temperature signal is transformed into electricity voltage signal, by using Lab view programming to show the thermal resistance of the resistance, the thermal resistance of the temperature dependence of resistance obtained with the temperature, in order to achieve the purpose of measuring temperature.
An outline of the basic knowledge of thermal resistance and heat resistance temperature measurement principle, conditioning circuit schematic diagram and hardware circuit design, the basics of virtual instruments, programming with Lab view to achieve temperature measurement function. Finally, the measurement results are analyzed.