HIGH-SENSITIVITY BROADBAND IMPACT-RESISTANT PIEZOELECTRIC ACCELEROMETER Russian patent published in 2020 - IPC G01P15/09 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment. High-sensitivity broadband impact-resistant piezoelectric accelerometer comprising a housing, an inertial mass, a piezoelectric element, wherein the piezoelectric element is adhered to the housing base by a layer of a soft compound with a thickness Δselected from the condition

where E_cm is the Young's modulus of the compound, ƒ_r is the resonance frequency of the accelerometer, M_p is the piezoelectric cell mass, M – inertial mass, S – area of flat surface of piezoelectric element, besides, between side surface of housing and inertial mass there introduced are stops made of soft compound, wherein total length L and thickness h of stops satisfy ratio

where E_c is Young's modulus of piezoceramics, h_c is height of piezoelectric element, H_m is height of inertial mass.

EFFECT: high resistance of the high-sensitivity broadband impact-resistant piezoelectric accelerometer to lateral effects.

1 cl, 2 dwg