Patent ID: 6512366
Filing Date: 2003-01-28
Classification: G01D

Abstract:
A rotary position transmitter for registering a rotary movement of a rotary element that can rotate about an axis of rotation comprising a sensor arrangement having at least two sensors and a downstream evaluation circuit by which the rotary position of the rotary element relative to a reference position of the rotary element can be registered; and wherein in each rotary position of the rotary element, the sensors are capable of supplying raw signals by which a number of angular ranges the rotary element has been rotated relative to the reference position may be determined; and further wherein in the event of slow rotary movement, power pulses are output to the sensor arrangement by a first power generation system to operate the sensor arrangement to determine an angular range by which the rotary element has been rotated relative to the reference position; and wherein the first power generation system and the rotary element are coupled to each other so that, by using two angular ranges which are determined solely by using the raw signals when immediately successive power pulses are output, the direction of rotation of the rotary element can be detected.