Frequency-wave number piezoelectric fiber transducer for directional fluctuation excitation and detection

The invention provides a directive fluctuation excitation and detection frequency-wave number piezoelectric fiber transducer, which comprises an electrode component and a piezoelectric fiber component, the electrode component comprises two electrode layers, the electrode layers are flexible printed circuit films, the electrode layers are spiral, and the piezoelectric fiber component is arranged between the electrode layers. The piezoelectric fiber component comprises a piezoelectric fiber composite layer located between two electrode layers, the piezoelectric fiber composite layer comprises piezoelectric fibers and an epoxy resin matrix, and the piezoelectric fibers are evenly embedded into the epoxy resin matrix at intervals in the annular direction of the epoxy resin matrix. The transducer has the beneficial effects that the transducer has strong directivity and can realize high-precision positioning of a signal source, so that the position of a signal can be accurately determined in applications such as st