The fiber-capacitive drop analyzer is based on a specially designed drop sensor by means of the fiber drop and the capacitive drop analyzing technology

by the light intensity signal passing through the liquid drop and the instant drop capacitance signal achieved simultaneously to identify different drop.The principle of drop sensors is described

a system principle diagram is designed

an algorithm based on liquid drop fingerprint of this system is also studied.Preliminary experiments are carried out and these prove that the algorithm externalizes the overall properties of tested liquids and is suitable for fine discrimination among different kinds of liquids.