Patent ID: 9678175
Date: 2017-06-13
CPC Classifications: G01B,G01N,G01R

Claim:
1. An eddy current detection probe, comprising: a substrate having a substantially planar surface; a drive coil disposed on the substantially planar surface; an anisotropic magnetoresistive (AMR) sensor disposed on the substantially planar surface of the substrate and positioned within a perimeter of the drive coil; and a detection loop comprising a first electrical lead and a second electrical lead, wherein the first electrical lead is connected to a first end of the AMR sensor and the second electrical lead is connected to a second end of the AMR sensor, wherein the first electrical lead and second electrical lead are positioned at least partially around the substrate to form the detection loop, and wherein a principal direction of sensitivity of the detection loop is oriented substantially perpendicular to a principal axis of the drive coil, wherein the principal direction of sensitivity is a direction of maximum sensitivity.