Acoustic sensor and projector module having an active baffle structure
First Claim
1. An acoustic sensor and projector module comprising:
- a base acoustic baffle including at least one baffle layer;
a first acoustic transducer element, positioned on a surface of said base acoustic baffle, for projecting acoustic signals, said first acoustic transducer element having first and second opposing side planes;
a second acoustic transducer element, positioned on said surface of said base acoustic baffle, for sensing acoustic signals, said second acoustic transducer element having first and second opposing side planes, said first side plane of said second acoustic transducer element positioned opposite said first side plane o said first acoustic transducer element;
a first side acoustic baffle including at least one baffle layer positioned on said surface o said base acoustic baffle, said first side acoustic baffle having a first side plane in engagement with said second side plane of said first acoustic transducer element, said first side acoustic baffle baffling the acoustic signals projected by said first acoustic transducer element, and said first side acoustic baffle and said first acoustic transducer element baffling the acoustic signals sensed by said second acoustic transducer element; and
a second side acoustic baffle including at least one baffle layer positioned on said surface of said base acoustic baffle, said second side acoustic baffle having a first side plane in engagement with said second side plane of said second acoustic transducer element, said second side acoustic baffle baffling the acoustic signals sensed by said second acoustic transducer element, and said second side acoustic baffle and said second acoustic transducer element baffling the acoustic signals projected by said first acoustic transducer element,wherein each of said base acoustic baffle, said first acoustic transducer element, said second acoustic transducer element, said first side acoustic baffle, and said second side acoustic baffle forms a 1/4 wavelength acoustic baffle.
3 Assignments
0 Petitions
Accused Products
Abstract
An acoustic sensor and projector module for sonar applications includes a first acoustic transducer element operating as a projector to generate an acoustic beam, and a second acoustic transducer element acting as a hydrophone to sense pressure wave returns. When the second acoustic transducer element operates in a sensing mode, the first acoustic transducer element serves in conjunction with a baffle structure to baffle acoustic signals presented to the hydrophone. Similarly, when the first transducer element operates in a projecting mode to generate an acoustic beam, the second transducer element acts in combination with a baffle structure to baffle acoustic signals emitted by the projector.
24 Citations
19 Claims
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1. An acoustic sensor and projector module comprising:
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a base acoustic baffle including at least one baffle layer; a first acoustic transducer element, positioned on a surface of said base acoustic baffle, for projecting acoustic signals, said first acoustic transducer element having first and second opposing side planes; a second acoustic transducer element, positioned on said surface of said base acoustic baffle, for sensing acoustic signals, said second acoustic transducer element having first and second opposing side planes, said first side plane of said second acoustic transducer element positioned opposite said first side plane o said first acoustic transducer element; a first side acoustic baffle including at least one baffle layer positioned on said surface o said base acoustic baffle, said first side acoustic baffle having a first side plane in engagement with said second side plane of said first acoustic transducer element, said first side acoustic baffle baffling the acoustic signals projected by said first acoustic transducer element, and said first side acoustic baffle and said first acoustic transducer element baffling the acoustic signals sensed by said second acoustic transducer element; and a second side acoustic baffle including at least one baffle layer positioned on said surface of said base acoustic baffle, said second side acoustic baffle having a first side plane in engagement with said second side plane of said second acoustic transducer element, said second side acoustic baffle baffling the acoustic signals sensed by said second acoustic transducer element, and said second side acoustic baffle and said second acoustic transducer element baffling the acoustic signals projected by said first acoustic transducer element, wherein each of said base acoustic baffle, said first acoustic transducer element, said second acoustic transducer element, said first side acoustic baffle, and said second side acoustic baffle forms a 1/4 wavelength acoustic baffle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An acoustic sensor and projector module comprising:
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a base acoustic baffle including at least one baffle layer having a top surface; a first acoustic transducer element, positioned on said top surface of said base acoustic baffle, for projecting acoustic signals, said first acoustic transducer element having first and second opposing side planes; a second acoustic transducer element, positioned on said top surface of said base acoustic baffle, for sensing acoustic signals, said second acoustic transducer element having first and second opposing side planes, said first side plane of said second acoustic transducer element positioned opposite said first side plane of said first acoustic transducer element; a first side acoustic baffle including at least one baffle layer positioned on said top surface of said base acoustic baffle and having a first side plane in engagement with said second side plane of said first acoustic transducer element; a second side acoustic baffle including at least one baffle layer positioned on said top surface of said base acoustic baffle and having a first side plane in engagement with said second side plane of said second acoustic transducer element; and a central acoustic baffle including at least one baffle layer positioned on said top surface of said base acoustic baffle between said first acoustic transducer element and said second acoustic transducer element, said central acoustic baffle having a first side plane in engagement with said first side plane of said first acoustic transducer element and a second side plane in engagement with said first side plane of said second acoustic transducer element, wherein said first acoustic transducer element, said central acoustic baffle, said firs side acoustic baffle, and said second side acoustic baffle serve to baffle said acoustic signals sensed by said second acoustic transducer element, and said second acoustic transducer element, said central acoustic baffle, said first side acoustic baffle, and said second side acoustic baffle serve to baffle said acoustic signals projected by said first acoustic transducer element. - View Dependent Claims (16, 17, 18, 19)
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Specification