System for acoustically passing electrical signals through a hull

DETAILED DESCRIPTION Therefore, it is an object of the present invention to provide a system for acoustically passing electrical signals through a solid rigid boundary, such as a hull of a vessel operated in water, and without creating holes in the boundary.
It is another object of the present invention to provide a hole free data transmission path between the external (immersed in water) and internal (free of water) surfaces of a hull.
It is still another object of the present invention to provide a system comprised of conventionally wet-end equipment for acoustically passing electrical signals through a hull.
Accordingly, the current invention provides a system for acoustically passing electrical signals through a solid rigid boundary comprised of metal and having first and second opposite surfaces being free of openings.
The system comprises one or more first buffers for receiving electrical signals being transmitted from a first source and one or more first modulators operatively and respectively connected to the one or more first buffers for modulating and combining the received signals with a carrier signal and providing a representative modulated output therefrom.
The system further comprises one or more first transmitting transducers arranged in contact with the first surface of the solid rigid boundary and operatively and respectively connected to the modulated outputs of the one or more first modulators and developing a first acoustic output signal representative thereof.
The system further comprises one or more first receiving transducers arranged in contact with the second surface of the solid rigid boundary and in alignment with the first transmitting transducers on the first surface and operatively connected to receive the acoustic output signal of respective transmitting transducers and developing representative outputs thereof.
The system further comprises one or more demodulators operatively and respectively connected to receive the representative output of respective one or more first receiving transducers and separating the carrier signal therefrom leaving a first unmodulated electrical signal