Magnetic infrasound sensor

Mueller, Fred M; Bronisz, Lawrence; Grube, Holger; Nelson, David C; Mace, Jonathan L

Title: Magnetic infrasound sensor

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Abstract

A magnetic infrasound sensor is produced by constraining a permanent magnet inside a magnetic potential well above the surface of superconducting material. The magnetic infrasound sensor measures the position or movement of the permanent magnet within the magnetic potential well, and interprets the measurements. Infrasound sources can be located and characterized by combining the measurements from one or more infrasound sensors. The magnetic infrasound sensor can be tuned to match infrasound source types, resulting in better signal-to-noise ratio. The present invention can operate in frequency modulation mode to improve sensitivity and signal-to-noise ratio. In an alternate construction, the superconductor can be levitated over a magnet or magnets. The system can also be driven, so that time resolved perturbations are sensed, resulting in a frequency modulation version with improved sensitivity and signal-to-noise ratio.

Inventors:

Mueller, Fred M ^[1]; Bronisz, Lawrence ^[1]; Grube, Holger ^[1]; Nelson, David C ^[2]; Mace, Jonathan L ^[1]

Los Alamos, NM
Santa Fe, NM

Issue Date:: 2006-11-14

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 908043

Patent Number(s):: 7134342

Application Number:: 10/932,654

Assignee:: The United States of America as represented by the United States Department of Energy (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

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G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V1/181 - {Geophones}

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DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Mueller, Fred M, Bronisz, Lawrence, Grube, Holger, Nelson, David C, and Mace, Jonathan L. Magnetic infrasound sensor.  United States: N. p., 2006. 
        Web.

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                    Mueller, Fred M, Bronisz, Lawrence, Grube, Holger, Nelson, David C, & Mace, Jonathan L. Magnetic infrasound sensor.  United States.

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                    Mueller, Fred M, Bronisz, Lawrence, Grube, Holger, Nelson, David C, and Mace, Jonathan L. Tue .  
        "Magnetic infrasound sensor".  United States.  https://www.osti.gov/servlets/purl/908043.

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@article{osti_908043,

  title        = {Magnetic infrasound sensor},

  author       = {Mueller, Fred M and Bronisz, Lawrence and Grube, Holger and Nelson, David C and Mace, Jonathan L},

  abstractNote = {A magnetic infrasound sensor is produced by constraining a permanent magnet inside a magnetic potential well above the surface of superconducting material. The magnetic infrasound sensor measures the position or movement of the permanent magnet within the magnetic potential well, and interprets the measurements. Infrasound sources can be located and characterized by combining the measurements from one or more infrasound sensors. The magnetic infrasound sensor can be tuned to match infrasound source types, resulting in better signal-to-noise ratio. The present invention can operate in frequency modulation mode to improve sensitivity and signal-to-noise ratio. In an alternate construction, the superconductor can be levitated over a magnet or magnets. The system can also be driven, so that time resolved perturbations are sensed, resulting in a frequency modulation version with improved sensitivity and signal-to-noise ratio.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2006},

  month        = {11}

}

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