Magnetic tag using acoustic or magnetic interrogation

Details Magnetic tag using acoustic or magnetic interrogation Magnetic tag using acoustic or magnetic interrogation

1994-11-23

1996-10-15

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

333227, G08B 1314

Patent

active

055658474

ABSTRACT:
A tag structure suitable for attachment to an object and for being remotely sensed, includes at least one soft magnetic element mounted for being excited in an inhomogeneous magnetic field. The soft magnetic element includes first and second ends and is clamped at at least one of the first and second ends. Each soft magnetic element responds to the excitation to produce a unique, time-varying magnetic field corresponding to its resonant frequency, when excited. A system incorporating the tag includes an excitation device and a detector for detecting the mechanical vibrations of the soft magnetic element.

REFERENCES:
patent: 4341189 (1982-07-01), Yamaguchi et al.
patent: 4465047 (1984-08-01), Yamaguchi et al.
patent: 4510490 (1985-04-01), Anderson, III et al.
patent: 4622543 (1986-11-01), Anderson, III et al.
patent: 4727360 (1988-02-01), Ferguson et al.
patent: 4882569 (1989-11-01), Dey
patent: 4940966 (1990-07-01), Pettigrew et al.
patent: 4999609 (1991-03-01), Crossfield
patent: 5001458 (1991-03-01), Tyren et al.
patent: 5001933 (1991-03-01), Brand
patent: 5055786 (1991-10-01), Wakatsuki et al.
patent: 5166612 (1992-11-01), Murdock
patent: 5414412 (1995-05-01), Lian
patent: 5420569 (1995-05-01), Dames et al.

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