Sonar with damping structure
AssigneeSaab AB
InventorOskar Viklund
Life of this patent
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Abstract
The present disclosure relates to a sonar device (1) for detection of underwater objects. The sonar device comprises a body element (2) having a cavity. A piezo electric element (3) is comprised within the cavity. A resin filling (6) of the cavity protects the piezo electric element (3) from water at underwater operation. The sonar device further comprises a holder (4) adapted to hold the piezo electric element (3). The holder (4) is arranged to centre and hold the piezo electric element (3) within said body element (2). The holder (4) comprises in its structure a plurality of damping structures (5). A method of manufacturing holder and a sonar device is also disclosed.
Claims14
Sonar device (1) for detection of underwater objects, said sonar device comprising:
- a body element (2) having a cavity,
- a piezo electric element (3) positioned within the cavity and having:
- (i) a half-spherical shape defining a curved surface of the piezo electric element (3), and (ii) a planar surface defined by a diameter of the piezo electric element (3),
- a holder (4) having a plurality of damping structures (5) and supporting and centering the piezo electric element (3) within the body element (2), the piezo electric element (3) being positioned in the holder (4) such that the piezo electric element (3) is positioned and spaced apart a distance above a base surface of the body element (2), such that a portion of the holder (4) is positioned below the piezo electric element (3) and intermediate the piezo electric element (3) and the base surface, and such that the curved surface of the piezo electric element (3) is encapsulated by the holder (4), and
- a resin filling (6) within the cavity in order to protect the piezo electric element (3) from water at underwater operation.
Dependencies are inferred from the claim text.