Metal detector and discriminator using differentiation for backg

Details Metal detector and discriminator using differentiation for backg Metal detector and discriminator using differentiation for backg

1982-05-03

1985-04-30

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

For small object detection or location

324233, 328165, G01V 311

Patent

active

045146926

ABSTRACT:
Eddy current type metal detector for locating and distinguishing between metal objects of different types in the ground or other surroundings. Differentiation is employed to eliminate signals from the ground soil or other material in which the object is located, and objects of a particular type are detected from the phases of signals which they produce.

REFERENCES:
patent: 3732499 (1973-05-01), Danell et al.
patent: 3833850 (1974-09-01), Weber
patent: 3916301 (1975-10-01), Vild et al.
patent: 4016486 (1977-04-01), Pecori
patent: 4122776 (1978-10-01), Tedder
patent: 4128803 (1978-12-01), Payne

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