SMD-coil-based torque-sensor for tangential field measurement

A method comprising:

• providing a magnetostrictive sensor including a drive coil and one or more sense coils, the drive coil being mounted on a substrate and the one or more sense coils being mounted on the substrate wherein the substrate is positioned on one side of the derive shaft;
• receiving a drive current at the drive coil;
• emitting, from the drive coil, a magnetic field, wherein the magnetic field is emitted in a transverse direction to a radius of a drive shaft of an installed product;
• and
• receiving the magnetic field in the drive shaft and at the one or more sense coils.

A system comprising:

• an installed product including a drive shaft;
• a magnetostrictive sensor having a sensor probe comprising:
• a substrate;
• a drive coil operative to receive a drive current and to emit a magnetic field through the drive shaft, wherein the drive coil is mounted on the substrate;
• one or more sense coils operative to receive the magnetic field and to transmit a signal based on the received magnetic field, wherein the one or more sense coils are mounted on the substrate;
• and
• wherein the magnetic field is emitted from the drive coil in a transverse direction to a radius of the drive shaft, and
• wherein the drive coil is positioned centrally on the substrate and the one or more sense coils are mounted on the substrate radially from the drive coil.