Patent ID: 9103883
Filing Date: 2015-08-11
Classification: G01D,G01R

Abstract:
1. A method for checking plausibility of an incremental counter, counting pulses being detected via an incremental counter, a dynamic system generating the counting pulses with a clock rate corresponding to a state of the dynamic system, a minimum acceleration/deceleration value and a maximum acceleration/deceleration value for a possible or permitted change in the clock rate per time unit being predefined on the basis of operating limits of the dynamic system, the method comprising: calculating a current clock rate in each case from two last detected counting pulses, respectively; and checking said counting pulse at each newly detected counting pulse to determine whether a difference between a clock rate calculated during a newly detected counting pulse and a clock rate calculated immediately beforehand is within acceleration/deceleration limits defined by the minimum acceleration/deceleration value and the maximum acceleration/deceleration value; wherein implausibility is detected if the difference between the clock rate calculated during the newly detected counting pulse and the clock rate calculated immediately beforehand is not within the acceleration/deceleration limits defined by the minimum acceleration/deceleration value and the maximum acceleration/deceleration value.