Passive sensor for measuring rotation rate of vehicle wheel bearing - comprises winding with low number of turns coupled to step=up voltage transformer

摘要

The passive sensor (15) is connected to a voltage changer, voltage transformer or voltage step-up device. The voltage transformer is arranged inside a connector which connects the measurement coil to a central supply. Alternatively, the transformer can be positioned near the measurement coil. The windings forming the measurement coil are made in the form of a printed circuit of one or more layers. USE/ADVANTAGE - For measuring the rotational speed between two relatively rotating parts, e.g. rings (10, 11) of vehicle wheel bearing. Minimal size in axial direction.