Magnetoelastic sensing apparatus and method for remote pressure query of an environment
CA Grimes, PG Stoyanov, D Kouzoudis - US Patent 6,393,921, 2002 - Google Patents
(57) ABSTRACT A pressure Sensing apparatus for operative arrangement within an
environment, having: a Sensor comprising a hermetically-Sealed receptacle, at least one
Side of which has an flexible membrane to which a magnetically hard element is attached.
Enclosed within the receptacle is a magneto Strictive element that Vibrates in response to a
time-varying magnetic field. Also included is a receiver to measure a plurality of Successive
values for magneto-elastic emission intensity of the Sensor taken over an operating range of …
environment, having: a Sensor comprising a hermetically-Sealed receptacle, at least one
Side of which has an flexible membrane to which a magnetically hard element is attached.
Enclosed within the receptacle is a magneto Strictive element that Vibrates in response to a
time-varying magnetic field. Also included is a receiver to measure a plurality of Successive
values for magneto-elastic emission intensity of the Sensor taken over an operating range of …
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