Method of remote sensing of objects

Details Method of remote sensing of objects Method of remote sensing of objects

G - Physics

11

C

340/124.3

G11C 17/02 (2006.01) G06K 7/08 (2006.01) G07F 7/08 (2006.01) G08B 13/24 (2006.01) G11C 11/20 (2006.01)

Patent

CA 1279386

ABSTRACT The invention relates to a method and an ar- rangement of automatic remote identification of se- parate objects or separate objects in a set of ob- jects, each object being provided with identifier means comprising identifiers made by material with high magnetomechanical coupling, the identifiers preferably comprising a plurality of strips of said material, the resonant frequency thereof being tuned to correspond to the desired information specific to the object, said objects being disposed in an inter- rogation zone when identification is requested. The method according to the invention comprises the steps of exposing essentially the whole of said zone to a magnetic bias field, generating in said zone a magnetic interference signal bringing said strips to oscillate at resonant frequencies, detecting the changes in the Young's modulus of said strips on said identifier means caused by said magnetic bias field, and utilizing said changes of the Young's modulus from the basic values to detect presence of individual strips and sets of strips, each set be- longing to one identifier means.

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