High sensitivity accelerometer for crossed dipoles acoustic...

Details High sensitivity accelerometer for crossed dipoles acoustic... High sensitivity accelerometer for crossed dipoles acoustic...

G - Physics

01

P

73/42

G01P 15/00 (2006.01) B06B 1/06 (2006.01)

Patent

CA 1299387

ABSTRACT An accelerometer for underwater acoustic sensors includes a pair of cylindrical piezoelectric crystals configured in a cantilever mode and having attached thereto an electrode segmented into four equal quadrants. In response to translational motion perpendicular to the axes of the piezoelectric crystals, orthogonal voltage signals are generated, from which the crossed dipole directivity patterns can be obtained. The symmetric use of two such piezoelectric crystals enables spurious responses, to rotational motion about an axis perpendicular to the central axis of a cylindrical container for the crystals, to be avoided.

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