Patent ID: 6286361
Filing Date: 2001-09-11
Classification: F01D,G01D,G01L,G01N

Abstract:
A method of remotely detecting at least one from the group consisting of pressure, force, temperature, density, vibration, viscosity and speed of sound in a fluid in an article, the article having an inside and an outside, the method comprising:providing a magnetostriction transducer located wholly in the inside of the article,providing means to produce a varying magnetic field in spaced apart relationship with said magnetostriction transducer, positioning the means to produce a varying magnetic field outside the article,producing a varying magnetic field such that the varying magnetic field acts upon said magnetostriction transducer to generate vibrations in said magnetostriction transducer,providing means to detect the vibrations in spaced apart relationship with said magnetostriction transducer, positioning the means to detect the vibrations outside the article,detecting the vibrations generated in said magnetostriction transducer by the varying magnetic field,and analyzing the detected vibrations to determine at least one from the group consisting of the pressure, force, temperature, density, vibration, viscosity and speed of sound in a fluid.