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:
Jul. 13, 2010
Filed:
Mar. 02, 2006
David J T Heatley, Felixstowe, GB;
Jane E Tateson, Woodbridge, GB;
Christopher M Roadknight, Woodbridge, GB;
Mark a Shackleton, Ipswich, GB;
David J T Heatley, Felixstowe, GB;
Jane E Tateson, Woodbridge, GB;
Christopher M Roadknight, Woodbridge, GB;
Mark A Shackleton, Ipswich, GB;
BRITISH TELECOMMUNICATIONS public limited company, London, GB;
Abstract
The present invention relates to a sensing system, in particular to sensing system for sensing undersea seismic events. A vibration sensor is provided for sensing seismic vibrations on the sea bed is provided. The vibration sensor is electrically coupled to a transmitter unit, the transmitter unit being arranged to transmit, in use, an acoustic wave from which the presence of a seismic vibration can be inferred. The acoustic wave modulates light travelling along a nearby optical cable, the modulation being recovered at a distant monitoring station. A flotation arrangement is provide for retaining the transmitter unit in a raised position relative to the sea bed to facilitate the coupling of the acoustic wave to the optical cable.