Self-calibration circuit for pulse-train tranducer signals

Details Self-calibration circuit for pulse-train tranducer signals Self-calibration circuit for pulse-train tranducer signals

1995-11-20

1997-11-18

Wambach, Margaret Rose

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

327232, 327241, 324130, 324601, H01J 1504

Patent

active

056892039

ABSTRACT:
A self-calibration circuit for sensors and transducers that produce pulse-train outputs of the type having a count-until-disabled counter (250) which counts the number of pulses corresponding to a known value of the sensed or transduced quantity in a variable frequency pulse train during the time that a known number of pulses are counted in a reference pulse train by a frequency divider (210); the count accumulated by the count-until-disabled counter being stored, after accumulation, in a settable-divisor frequency divider (220 or 240) which can provide both calibrated sensor pulse-train outputs and calibration pulse-train outputs having the same frequency as the calibrated sensor pulse-train output at known values of the sensed parameter.

REFERENCES:
patent: 5506529 (1996-04-01), Baldwin
patent: 5585750 (1996-12-01), Noguchi et al.

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