Abstract
In this paper, application of the cross correlation method for estimating the velocity of air/solid fluid is explained. Electrostatic sensors are used as the primary sensors for this measurement and by using the cross correlation of signals from two electrostatic sensors, the speed of air/solid fluid is calculated. In calculating cross correlation, a truncated version of cross correlation is considered in order to perform cross correlation in an on-line mode. Also, to improve the accuracy of truncated cross correlation, it is performed only when a particle passes across the sensors. MATLAB is selected as the programming tool for performing the cross correlation algorithm. Different tests have been performed, in which the distance between two electrostatic sensors is set at various specified values, and the calculated velocities of solid particles are compared. It is shown that the results of these measurements are very similar, which is proof of the correctness of the results.
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