Counting apparatus and method for frequency sampling

Details Counting apparatus and method for frequency sampling Counting apparatus and method for frequency sampling

G - Physics

01

P

328/159, 73/42

G01P 15/02 (2006.01) G01R 23/02 (2006.01) G01R 23/10 (2006.01)

Patent

CA 1223454

COUNTING APPARATUS AND METHOD FOR FREQUENCY SAMPLING Abstract An apparatus and method for counting the number of cycles of a sensor signal and of a reference signal that occur during respective time intervals associated with a sampling interval defined by a sample signal. Sensorand reference gate signals are produced and respectively define sensor and reference intervals. The sensor interval begins and ends synchronously with respect to the sensor signal, and the reference interval begins and ends synchronously with respect to the reference signal. The sensor, reference and sampling intervals are approximately coextensive with one another. Cycles of the sensor and reference signals are counted during the sensor and reference intervals, respectively. The process may be repeated for a plurality of successive sampling intervals.

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