Low-noise fluxgate magnetometer with increased operating temperature range

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United States of America Patent

PATENT NO 10114081
APP PUB NO 20160041233A1
SERIAL NO

14721542

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In some embodiments, an apparatus and a system, as well as a method and an article, may include synchronic symmetrical integrator circuitry and a magnetic field measurement device comprising an excitation circuit including an excitation coil, the excitation coil being wound around an amorphous soft magnetic core having a certain temperature coefficient such that inductance of the excitation circuit will change with temperature variations of the amorphous soft magnetic core; a detection circuit including a detection coil, the detection coil being wound around the same amorphous soft magnetic core, such that inductance variation of the detection circuit with temperature of the core can be detected from the excitation coil; and a resonation control circuit coupled to the excitation circuit and to the detection circuit to adjust a resonant frequency of the detection circuit responsive to temperature variations of the core. Additional apparatus, systems, and methods are disclosed.

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Patent Owner(s)

  • HALLIBURTON ENERGY SERVICES, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beste, Randal Thomas Katy, US 16 246
Li, Wenquan Kingwood, US 11 32
Roberson, Brian The Woodlands, US 6 40

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