Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Patent
1994-05-25
1996-07-02
O'Shea, Sandra L.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
For small object detection or location
324 67, G01R 1900, G01V 308
Patent
active
055325980
ABSTRACT:
An electromagnetic tagging system is provided for remotely detecting and locating polymeric and other non-conductive structures situated behind barriers, such as underground plastic pipes or containers. The system comprises a fluctuating magnetic field source, a pattern of tags embedded in discrete regions of the wall of the polymeric structure, each tag including an amorphous magnetic metal target for generating a Barkhausen response when exposed to the fluctuating magnetic field source, and a portable detection circuit movable along the ground or other control surface for remotely detecting the Barkhausen response. The amorphous magnetic material in each tag is preferably in the form of a plurality of elongated particles having aspect ratios of at least 3 to 1 and arranged end-to-end. The pattern that the tags are arranged in provide information concerning the identity, orientation, or extent of the structure, and the portable detection circuit is capable of detecting at least two of the tags simultaneously as it is moved over the surface of the ground so that the patterns of the tags may be easily determined.
REFERENCES:
patent: 3633533 (1972-01-01), Allen et al.
patent: 4197104 (1980-04-01), Krystyniak et al.
patent: 4298862 (1981-11-01), Gregor et al.
patent: 4573829 (1986-03-01), Keene et al.
patent: 4660025 (1987-04-01), Humphrey
patent: 4686516 (1987-08-01), Humphrey
patent: 4797658 (1989-01-01), Humphrey
patent: 4859991 (1989-08-01), Watkins et al.
patent: 4940966 (1990-07-01), Pettigrew et al.
patent: 4944185 (1990-07-01), Clark, Jr. et al.
patent: 4980670 (1990-12-01), Humphrey et al.
patent: 5003291 (1991-03-01), Strom-Olsen et al.
patent: 5017873 (1991-05-01), Rippingale et al.
patent: 5029291 (1991-07-01), Zhou et al.
patent: 5036210 (1991-07-01), Goodman
patent: 5037494 (1991-08-01), Hilzinger et al.
patent: 5043666 (1991-07-01), Tavernetti et al.
patent: 5045368 (1991-09-01), Cosman et al.
patent: 5051034 (1991-09-01), Goodman
patent: 5122750 (1992-06-01), Rippingale et al.
patent: 5175419 (1992-12-01), Yamashita
patent: 5200704 (1993-04-01), Clark, Jr. et al.
patent: 5204526 (1993-04-01), Yamashita et al.
patent: 5268043 (1993-12-01), McCowan
patent: 5313192 (1994-05-01), Ho et al.
"Amorphous Metal Fiber Labels Foil Shoplifters" by Tsukasa Furukawa; 1987.
Brochure from Sensormatic "New Hi-Tech Antitheft System Puts The Collar On Workplace Crooks"; 1983.
Brochure from Sensormatic "Sensormatic's MicroLabel"; 1985.
Brochure from Metglas "Amorphous Magnetic Alloys", Technical Bulletin; 2705M; 1985.
Brochure from Sensormatic "An End To Profit Sharing" The Ultra Max System; 1987.
Byers William A.
Clark, Jr. William G.
Herald John J.
Junker Warren R.
Sadhir Rajender K.
O'Shea Sandra L.
Phillips Roger
Westinghouse Electric Corporation
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