Apparatus for detecting movement and position of an object having ring magnets which have rotational movement and a superimposed additional motion

摘要

The apparatus generates voltage pulses, in dependence on the movement and/or position of the object, in at least one coil by a magnetic field which causes relative movement of the coil and which is generated by two opposite pole magnets rotating about a common axis. The coil includes a spring which moves to and fro under the effect of the magnetic field due to the reluctance effect thus causing a polarity change which generates the pulses. The magnets are formed as connected ring magnets which execute an additional movement superimposed onto their rotational movement.