Position sensors enable a variety of functions and controls in electromechanical systems. Historically, designers implemented these sensors with microswitches and potentiometers that detect motion within the system. However, moving parts in these components wear out over time, oxidizing and accumulating grime from environmental exposure. In this case, components can fail and cause system-level failures.
Contact-free sensing technologies are replacing mechanical solutions to increase product reliability. Most materials are permeable to magnetic fields, making magnetic sensors a convenient alternative to reduce mechanical points of failure.