High sensitivity accelerometer for crossed dipoles acoustic sens

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

1987-11-25

1989-05-02

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367159, 310337, H04R 1700

Patent

active

048274593

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.

REFERENCES:
patent: 3311873 (1987-03-01), Schloss
patent: 4446544 (1984-05-01), Connoll, Jr.
patent: 4546459 (1985-10-01), Congdon

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