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US 7,255,196 B1Granted
Windshield and sound-barrier for seismic sensors
AssigneeBBN Technologies Corp.
InventorsWilliam B. Coney, Peter A. Krumhansl
Life of this patent
Estimating the term…
Abstract
A system and method for reducing acoustic, wind or other background noise that may interfere with sensing of a seismic signal is provided. More specifically, a shield is provided to enclose a geophone and thereby protect it from harmful noise. The shield may comprise a rigid shell, a structural damping material, an acoustically absorptive material, and a compliant seal for coupling the shield to the ground or reference surface.
Claims30
A system for sensing motion of a surface comprising:
- a seismic sensor coupled to the surface;
- and
- a shield configured to enclose the seismic sensor, wherein the shield is configured to provide an acoustic transmission loss, a wind noise loss, or both;
- wherein the shield further comprises a compliant seal that couples the shield to the surface, and at least three distinct layers selected from a group consisting of a rigid shell, an acoustically absorptive material layer, a structural damping material layer and a mass layer.
1 more element
A system for sensing motion of a reference surface comprising:
- a seismic sensor, a shield, and a suspension;
- wherein the shield is coupled to the seismic sensor using the suspension, the seismic sensor is coupled to the surface, and the shield is configured to enclose the seismic sensor and to provide an acoustic transmission loss, a wind noise loss, or both, and
- wherein the shield comprises at least three distinct layers selected from a group consisting of a rigid shell, an acoustically absorptive material layer, a structural damping material layer and a mass layer.
A method for sensing motion of a surface comprising:
- coupling a seismic sensor to the surface;
- and
- enclosing the seismic sensor with a shield, wherein the shield is configured to provide an acoustic transmission loss, a wind noise loss, or both, and
- wherein the shield further comprises a compliant seal, wherein the compliant seal couples the shield to the surface, and at least three distinct layers selected from a group consisting of a rigid shell, an acoustically absorptive material layer, a structural damping material layer and a mass layer.
1 more element
Dependencies are inferred from the claim text.