VERFAHREN UND VORRICHTUNG ZUR AUSWERTUNG EINER INFORMATION IN FREQUENZ UND PULSBREITE ENTHALTENDEN IMPULSFOLGE.

摘要

The method determines the periodic duration of the pulse sequence by counting pulses between two negative pulse edges and storing the measured values. The pulse duration is determined by detecting, for each program cycle of a microprocessor, whether the amplitude of the pulse sequence is high or low at each sampling point. There may be one or more sampling times per program cycle. When the signal is low, i.e. no pulse, the instantaneous period duration counter state is stored and used to calculate a difference with the next counter end value at a negative edge. The difference Value is a measure of periodic duration. It is stored as a new maximum value when it is less than the current maximum value.