Abstract：For the three-layer capacitance array sensor, two kinds of combined-electrode exciting-measuring mode are studied based on three-dimensional simulation. The values and the dynamic range of measured capacitance data, the uniformity of sensitivity distribution and the reconstructed images of different flow regimes are compared with conventional single-electrode exciting-measuring mode. Simulation experiments are carried out using COMSOL and Matlab software. The simulation results show that the measured capacitance values are larger and its dynamic range is smaller for the presented combined-electrode exciting-measuring mode. Meanwhile, the sensitivity distribution is more uniform and the quality of reconstructed images is improved obviously.
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2019, Vol. 40 
