Method of and measuring arrangement for metal detection with a c

Details Method of and measuring arrangement for metal detection with a c Method of and measuring arrangement for metal detection with a c

1995-11-01

1999-01-12

Snow, Walter E.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324243, 340551, G01N 2772, G01R 3312, G01V 311, G01V 338

Patent

active

058595325

ABSTRACT:
In a method and a measuring device for metal detection with the use of a coil arrangement the spatially offset transmitting coils are controlled with pulse sequences of different pulse patterns. The receiving coils associated with the transmitting coils are scanned with respect to the received measuring signals with a scan pattern corresponding to the respective associated pulse pattern. It is therefore possible to control simultaneously all transmitting coils and to provide a spatial determination of a metal object located in a throughgoing region of a gate frame.

REFERENCES:
patent: 4605898 (1986-08-01), Aittoniemi, et al.
patent: 4866424 (1989-09-01), Parks
patent: 5443517 (1995-08-01), Frazier
Patent Abstracts of Japan/Pub. # 60239682.
Fachzeitschrift Frequenz, 22 (1968) 10, pp. 300-305, Claus Colani, "Ein Neuartiges Metallsuchgeraet nach dem Pulsverfahren fuer grosse Gelaendeflaechen mit elektronischer Objektanalyse und -auswahl". (no translation).

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