Patent ID: 9285386
Filing Date: 2016-03-15
CPC Classification: G01D,G01P

Claim Text:
1. A method of converting an electrical signal to a rotational speed comprising: converting an alternating electrical input to an alternating magnetic field using a transmitter coil of a first PCB; receiving the alternating magnetic field with a resonance coil of a second PCB rotating relative to the first PCB; emitting a modulating position signal from the resonance coil of the second PCB; receiving the modulating position signal with a receiver coil of the first PCB; outputting a signal indicative of rotational speed from the first PCB; and converting the output signal to an angular frequency Ω=360°/nT, where Ω is an angular speed in degrees per second, n is a number of receiver coil pole pairs on the first PCB, and T is a period of the outputted signal.