Device for contactless determination of rotation and/or position of an object having an encoder

摘要

The device has a permanent magnetic encoder in ring form, and including north and south poles (2, 3) of two different pole widths and a sensing head with a differential-hall sensor (8). The north and south poles are alternatively aligned in a circumferential direction. The encoder is designed as a dual lead encoder (1) with reverse magnetization and as a cam shaft encoder. One of encoder leads (4, 5) is assigned to each sensor unit (9, 10) of the differential-hall sensor. The sensor units are attached adjacent to each other.