The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2011
Filed:
Nov. 21, 2006
Ian Bedwell, Rydalmere, AU;
Ian Bedwell, Rydalmere, AU;
Thales Underwater Systems Pty Limited, Rydalmere, New South Wales, AU;
The Commonwealth of Australia, Canberra, ACT, AU;
Abstract
A hydrophone () for immersion in a liquid body defining a pressure is disclosed The hydrophone () includes a sensor () for providing an electrical signal indicative of the pressure; and a transducer () electrically connected to the sensor (). The transducer () acts upon a fiber optic cable () so as to convert the electrical signal into a corresponding optical output signal for transmission within the fiber optic cable (). The liquid body defines a depth-dependent static pressure and a dynamic pressure and the sensor () provides an electrical signal having a first component indicative of the static pressure and a second component indicative of the dynamic pressure. A filter () is electrically connected to the sensor () so as to receive (the electrical signal, filter out the first component, and output to the transducer () a uttered electrical signal indicative of substantially only the second component.