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Security Sensor System Based on Large Barkhausen Jump of Amorphous Magnetostrictive Metal Wires


JN Nderu
J Mathu
HT Ngetha

Abstract

This paper presents and discusses preliminary laboratory results for fabrication and testing of a security sensor system for use in article surveillance in such places as libraries, CD rental shops, and supermarkets, as a crime preventive measure. The system employs the large Barkhausen jump (LBJ) inherent in the amorphous magnetostrictive metal wires. The system takes advantage of the superior sensor characteristics of magnetostrictive metal wires.

Journal of Agriculture, Science and Technology Vol.4(1) 2002: 91-101

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eISSN: 1561-7645