Optimum design of electrostatic sensor conditioning circuit based on Multisim

The velocity measurement of gas/solid two-phase flow can be obtained by using the electrostatic sensor combined with cross-correlation measuring techniques. In order to realize the electrostatic velocity measurement the high demand of the conditioning circuit is required. In this paper, the charge conversion circuit and the dynamic filter circuit, as the key parts of the conditioning circuit, are analyzed. The parameters of the circuits are optimized and simulated in Multisim. The rationality and practicality of the parameters are verified by the simulation.