| Pneumatic conveying has been widely used in agricultural and industrial production, the parameters of which are air velocity, solid-to-air ratio and energy consumption. Determination of choosing rational parameters is the central content on pneumatic conveying system design. Conventional measurement of these parameters usually be carried out by hand with traditional apparatus. On the contrary, modern dynamic measure and control method unite virtual instrument technology, sensor technology and computer technology, employed in this paper. An automatic measurement system is developed on pneumatic conveying experimental rig.Hardware and software is designed for automatic measurement and analysis system by applied virtual instrument to pneumatic conveying system. Differential pressure transducer, torque sensor, data acquisition cards are used to measure the parameters in hardware design based on the analysis of all kinds of measure methods of parameters. Frequency inverter and controlled silicon are utilized to automatically control experimental states. LabWindows/CVI is developing platform of software, which utilizes design method of module to show acquired signal on real-time, analyze data automatically, perform data processing and predict solid-to-air ratio by neuron network soft-sensor method.The results of experiment on pneumatic conveying experimental rig show: the parameters signal of pneumatic conveying system can be automatically acquired and analyzed in the developed measurement and control system. The curve of relationship among the parameters can be displayed also. System can provide users with orthogonal quadratic regression rotary equation of parameters by statistic analysis. Furthermore, software can give optimal parameters by optimization algorithm. The software of measurement and control system has friendly interface, great extensibility, easy maintenance and low cost. The system can promote the theoreticalresearch and application in the field of pneumatic conveying.
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