Rotary movement measuring method

摘要

The method involves providing a series of voltage pulses (S) to electrical elements (4) which contain a reactive impedance such as an RL or RC combination. The elements are positioned close to a rotary element (2) which is at least partially covered with a magnet (3). The rotary movement is determined from the measured time for the voltage at the resistor (11) to rise to a threshold level An Independent claim is included for an apparatus for measuring rotary movement.