Thermal accelerometer with reduced sensitivity to external magnetic fields
AssigneeSagem SA
InventorsAndre Boyer, Alain Renault, Bernard Varusio, Alain Giani
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Abstract
The thermal accelerometer of the invention comprises an enclosure having disposed therein a central filament powered by alternating electric current of zero mean amplitude and having a frequency lying between first and second resonant modes of vibration of the central filament, the central filament lying between detector filaments adjacent to reaction filaments powered by alternating electric current of zero mean amplitude and having a frequency lying between the first and second resonant modes of vibration of the reaction filaments.
Claims4
A thermal accelerometer comprising an enclosure having disposed therein a central filament connected to a power supply member delivering electric current, and disposed between two detector filaments connected to a member for comparing the temperatures of the detector filaments, wherein the electric current delivered to the central filament is alternating current of zero mean amplitude and having a frequency greater than a first resonant mode of vibration of the central filament.
Dependencies are inferred from the claim text.