PIEZOELECTRIC ACCELEROMETRE Russian patent published in 2010 - IPC G01P15/09 

FIELD: physics.

SUBSTANCE: accelerometre has a housing base, a post, piezoelectric discs, an inertial mass, a nut, an output cable, as well as two insulating discs, an insulating bushing, an electrically conducting disc and a metal hose. The post is made separate from the base of the housing in form of a screw. A circular hole is made in the base of the housing. One of the insulating discs and the insulating bushing are worn on the body of the screw. On the lower side of the base, the screw is inserted into the hole in the base of the housing, while the other insulating disc, electrically conducting disc, piezoelectric disc and inertial mass, which is made in form of an inverted cup, are successively worn on top around the body of the screw. All negative plates of the piezoelectric discs are electrically connected to the inertial mass and with the screen of the output cable which goes through the cup and is electrically insulated from the housing of the sensor, and all positive plates are connected through a wire, which passes through the hole in the inertial mass, to the middle wire of the output cable placed in the metal hose joined to the housing.

EFFECT: increased operational reliability.

2 dwg