Apparatus and method for detecting and identifying ferrous and non-ferrous metals

Apparatus and method for detecting and identifying ferrous and non-ferrous metals

A metal detector using a linear current ramp followed by an abrupt current transition to energize the transmitter coil. The constant emf imposed on the target during the current ramp permits separation of transient voltages generated in response to eddy currents in the target and its environment fro...

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1. Verfasser: WESTERSTEN ALLAN
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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creator WESTERSTEN ALLAN
description A metal detector using a linear current ramp followed by an abrupt current transition to energize the transmitter coil. The constant emf imposed on the target during the current ramp permits separation of transient voltages generated in response to eddy currents in the target and its environment from the voltages arising as a result of an inductive imbalance of the coil system The temporal separation of the various voltages makes reliable differentiation between ferrous and non-ferrous targets possible.
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The constant emf imposed on the target during the current ramp permits separation of transient voltages generated in response to eddy currents in the target and its environment from the voltages arising as a result of an inductive imbalance of the coil system The temporal separation of the various voltages makes reliable differentiation between ferrous and non-ferrous targets possible.</abstract><oa>free_for_read</oa></addata></record>
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subjects DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
title Apparatus and method for detecting and identifying ferrous and non-ferrous metals
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