Woodward, Inc.
MULTI-CHANNEL MAGNETIC SENSOR DEVICE

Abstract:

Methods and systems for a rotary contactless potentiometer device, which includes one or more sensors an axially magnetized ring magnet configured to generate an asymmetric magnetic field directed toward a plurality of sensors, such as a Hall Effect sensor, with each sensor being within range of the asymmetric magnetic field. The sensors are mounted on one or more substrates, such as a printed circuit board (PCB). In examples, each sensor channel is physically and/or electrically isolated on the substrate. The sensors are arranged within range of a magnetic field, such as from a magnet rotatable about a shaft. The potentiometer device is housed in a frame to reduce stray magnetic interference.