Methods and apparatus for magnetic field strength measurement

摘要

This disclosure provides methods and apparatus for wireless power field testing. An apparatus for sensing magnetic field strength of a wireless charging pad is provided. The apparatus includes a plurality of conductive loops each configured to sense a strength of a magnetic field passing through a respective one of the plurality of conductive loops. The apparatus includes at least one pair of terminals configured to be electrically connected to one or more of the plurality of conductive loops and configured to provide a voltage signal having a magnitude proportional to the strength of the magnetic field passing through the one or more of the plurality of conductive loops. In some implementations, the apparatus further includes a multiplexer circuit configured to individually electrically connect each of at least a subset of the plurality of conductive loops to the at least one pair of terminals.

主权项

1. An apparatus for sensing magnetic field strength of a wireless charging pad, comprising:
a plurality of conductive loops, each configured to sense a strength of a magnetic field passing through a respective loop of the plurality of conductive loops; at least one pair of terminals configured to be electrically connected to one or more of the plurality of conductive loops and configured to provide a voltage signal having a magnitude proportional to the strength of the magnetic field passing through the one or more of the plurality of conductive loops; and a processing circuit configured to:
sum the voltage signal from, each of the plurality of conductive loops anddetermine a magnetic field strength of the magnetic field intersecting the plurality at least in part on thee signals.