New cancellation technique for electromagnetic induction sensors

Waymond R. Scott Jr.; Michael Malluck

doi:10.1117/12.603854

10 June 2005 New cancellation technique for electromagnetic induction sensors

Waymond R. Scott Jr., Michael Malluck

Proceedings Volume 5794, Detection and Remediation Technologies for Mines and Minelike Targets X; (2005) https://doi.org/10.1117/12.603854
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

A new technique is presented for canceling the coupling between the coils of an electromagnetic induction sensor while using simple dipole detection coils. A secondary bucking transformer is used to cancel the coupling between the coils. The technique allows the cancellation that can be obtained using a quadrupole receive coil while maintaining the depth sensitivity and simple detection zone of a dipole coil. Simple circuit models for the sensor with some of the important parasitic effects are developed. An experimental model is developed and used to demonstrate the technique. Experimental results are presented that demonstrate more than 75 dB of cancellation up to 100 kHz and the response of the sensor to a few targets.

Citation Download Citation

Waymond R. Scott Jr. and Michael Malluck "New cancellation technique for electromagnetic induction sensors", Proc. SPIE 5794, Detection and Remediation Technologies for Mines and Minelike Targets X, (10 June 2005); https://doi.org/10.1117/12.603854

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