Patent ID: 9239270
Filing Date: 2016-01-19
CPC Classification: G01L,G01P,H01L,Y10T

Claim Text:
1. A piezoelectric sensing element, comprising: a ring type piezoelectric device, with two sides respectively printed with a low-temperature electrode, wherein the polarization direction of the ring type piezoelectric device is clockwise or counterclockwise perpendicular to the direction of an annular cross sectional surface; two ceramic structural adhesives, respectively located above and below the ring type piezoelectric device; two electrode sheets, respectively located above and below the two ceramic structural adhesives, wherein the two electrode sheets can be adhered to the ring type piezoelectric device by pressurizing the two ceramic structural adhesives; two structural adhesives, respectively located above and below the two electrode sheets; a ring type sheet, located above or below one of the two structural adhesives; and a disk-shaped cylindrical ceramic sheet, located below or above another of the two structural adhesives.