TRIPARTITE PIEZOELECTRIC ACCELERATION METER Russian patent published in 1996 - IPC

FIELD: instruments. SUBSTANCE: when vibration acceleration is applied along X-direction, one of extreme piezoelectric plates generates electric charge, which is caused by shift deformation and which absolute value is d_1 5. Opposite extreme piezoelectric plate also generates charge which is also caused by shift deformation and which absolute value is d_1 5. When vibration acceleration is applied along Z-direction, middle piezoelectric plates generate electric charge, which is caused by tension-compression deformation and which absolute value is d_3 3. Material of piezoelectric plates should conform to equation 2d_33middle≃ d _15extreme. EFFECT: increased precision, increased stability to vibration. 2 dwg