PIEZO-ELECTRIC ELEMENT AND TRANSFORMER OF OSCILLATIONS WITH PIEZO-ELECTRIC ELEMENT Russian patent published in 2007 - IPC H04R17/00 H01L41/08 G01L23/10 

FIELD: engineering of devices for transforming pressure signals to electric signals and vice versa.

SUBSTANCE: transformer of oscillations contains piezo-element, which is mounted in the body. One end surface of piezo-electric element is rigidly connected to bottom of body. Another end surface represents a surface, which is sensitive to oscillations and, preferably, is not covered by body. Volume of body is filled with filling composition. Piezoelectric element is mechanically isolated from filling composition. Piezoelectric element contains porous homogeneous ceramic body and at least two electrodes connected thereto. Porous ceramic body has open pores and is covered with elastic cover, preferably across whole surface.

EFFECT: increased sensitivity.

16 cl, 3 dwg