Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Measuring or testing
Patent
1990-08-10
1992-06-16
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Measuring or testing
377 23, 377 39, 73517AV, G01D 5243, G01D 304, G01L 116
Patent
active
051230356
ABSTRACT:
A processing circuit is provided for signals (S.sub.1, S.sub.2) supplied by two transducers measuring a physical quantity parameter in a differential mode and delivering a signal representative of this parameter. This processing circuit essentially comprises a first counter for counting within a measurement period an integer N.sub.1 of periods T.sub.1 of the signal S.sub.1, a second counter for counting within this period of measurement an integer N.sub.2 of periods T.sub.2 of the signal S.sub.2, and a logic circuit to deliver a signal S.sub.m representative of the difference between the interval N.sub.1 .multidot.T.sub.1 and the interval N.sub.2 .multidot.T.sub.2, this signal being representative of the value of the physical parameter. The circuit is useful for measuring acceleration, force, pressure or temperature.
REFERENCES:
patent: 4479385 (1984-10-01), Koehler
patent: 4485452 (1984-11-01), Cording et al.
patent: 4558456 (1985-12-01), Bezard et al.
patent: 4896268 (1990-01-01), Macgugan
Electronics & Wireless World, vol. 84, No. 1514, Oct. 1978, pp. 75-76 entitled "Frequency Synthesizers-2" by R. Thompson.
Hottinger Werner
Wiget Fridolin
Asulab S.A.
Heyman John S.
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