Patent ID: 7325455

Claim:
A high-temperature environment velocity and acceleration sensor, comprising: at least one piezoelectric element stack mounted within a first high-temperature resistant hermetically-sealed housing; a dual conductor cable; an integrated signal processing circuit mounted within a second high-temperature resistant hermetically-sealed housing and electrically connected to said piezoelectric element stack via said cable, said signal processing circuit comprising: a charge amplification stage comprising at least one pair of charge amplifiers, the input of each charge amplifier of said pair being electrically connected to said at least one piezoelectric element stack; a differential amplifier stage having two inputs, an output of each charge amplifier of said pair of charge amplifiers being connected to a different one of said two inputs of the differential amplifier; an ohmic voltage divider trim network connected between at least one charge amplifier output and an input of the differential amplifier, wherein the trim network enables precision custom equalization of common-mode signal strength at an input of the differential amplifier stage; and a buffer amplifier and a voltage integrating amplifier both within said second hermetically-sealed housing each connected to the output of said differential amplifier stage for respectively providing both an acceleration signal output and a velocity signal output from said second hermetically-sealed housing.