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Werner Moser

Heimo Denk

Peter Mantsch

Peter Claassen

The device comprises an evaluation unit and at least one transducer for feeding the electric signal to this unit on the occurrence of a characteristic event and the evaluation unit comprises a recognition unit sensing the occurence of the characteristic event. To permit determination of the trigger point characterizing the occurrence of the characteristic event also in the case of heavily noise-contaminated measuring signals the evaluation unit is provided with one or several comparators in addition to the recognition unit, whose thresholds are spaced out over a certain range of levels, and--depending on whether the transducer signal has reached the threshold of the recognition unit--by using the information contained in the evaluation unit, which is influenced by the sequence of the comparator responses according to the signal shape delivered by the transducer, for determination of the trigger point characterizing the occurence of the characteristic event, in a manner predetermined in the evaluation unit.

Device for determining a trigger point on an electric signal with given

A partitioning circuit will partition into subintervals the time interval between two signals delivered by a recognition circuit, and will activate a gate circuit during one of these intervals which has been predetermined. In addition to the recognition circuit, the sequence of signals from a sensor responding to the occurrence of an at least approximately periodic event, is fed to a comparator circuit which will transmit a pulse to the gate circuit each time a certain signal level has been exceeded. If the gate is active, this pulse will be available for further processing.

Device for generating an electric trigger pulse

A device for measuring rotational angles of a rotating shaft of a machine, and comprising transducers signals of which being released by one or several reference angle signs or a machine characteristic phenomenon respectively, and being input to a processing unit. The processing unit comprises a frequency multiplier circuit and a counter the frequency multiplier circuit multiplying the signal of one or several reference angle signs, with the counter counting the multiplied signals and being resettable and startable by either a reference angle signal or the signal released by the machine characteristic phenomenon and being blockable by the respective other signal.

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Graz, Austria

Werner Moser