Variable Permeability Magnetometer Systems and Methods for Aerospace Applications

Shams, Qamar A [Inventor]Sutton, John F [Inventor]

关键词: MAGNETOMETERS;    PERMEABILITY;    PATENTS;   

RP-ID  :  US-Patent-10,036,784, US-Patent-Appl-SN-14/676,172

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

A magnetometer configured to measure low field strength magnetic fields is provided. Certain embodiments of the magnetometer include a cylindrical coil assembly having a variable permeability core and terminals disposed at both ends. A current source circuit may be operably connected to the terminals and configured to apply a voltage controlled current across the terminals. A voltage readout circuit may be operably connected to the terminals and configured to measure a voltage across the terminals due to the applied current from the current source. An inductance of the coil assembly directly varies as an ambient magnetic field strength varies a permeability of the variable permeability core, and a voltage across the terminals varies directly with the inductance such that the measured voltage across the terminals is a direct measure of the ambient magnetic field strength.