Process and device for detecting frequency variations

Details Process and device for detecting frequency variations Process and device for detecting frequency variations

G - Physics

01

R

324/37

G01R 23/10 (2006.01) G01R 23/00 (2006.01) G01R 23/15 (2006.01)

Patent

CA 1192614

ABSTRACT A process and device are provided for detecting frequency variations of waveforms (10). The waveform (10) is sensed and a first signal (16) is provided with each occurrence of the sensed waveform (10). Each time that the first signal is provided, a measuring pulse (24) that is different in duration than the sensed waveform (10) is provided. The sensed waveform (10) and the measuring pulse (24) are simultaneously transmitted to a gate (28) which provides a signal at its output to indicate if the frequency of the sensed waveform has varied more than a predetermined amount.

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