Method and apparatus for measuring and monitoring the rate of ro

Details Method and apparatus for measuring and monitoring the rate of ro Method and apparatus for measuring and monitoring the rate of ro

1982-09-30

1985-03-19

Wise, Edward J.

Boots, shoes, and leggings

324163, 324175, 377 15, 73462, G01P 336

Patent

active

045063397

ABSTRACT:
An apparatus for measuring and monitoring the angular velocity of the shaft of a rotating machine. In this apparatus, a plurality of sensors is positioned adjacent the shaft of the rotating machine for generating sequential pulses with periods proportional to the angular velocity of the shaft. The pulses are generated at intervals such that, during the period between adjacent pulses from one sensor, pulses are generated by each of the other sensors. An oscillator is provided for generating reference pulses at a predetermined pulse repetition rate, and a plurality of counting devices are coupled to respective sensors and to the output of the oscillator for counting the pulses generated by the oscillator. An averaging and reciprocal circuit is coupled to the output terminals of the counting devices for obtaining the average of the counting device outputs and then generating the reciprocal of the average value. The output of the reciprocal circuit is proportional to the angular velocity of the shaft of the rotating machine in revolutions per unit time.

REFERENCES:
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patent: 4179656 (1979-12-01), Wagner
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patent: 4195291 (1980-03-01), Burks, Jr.
patent: 4356447 (1982-10-01), Honig et al.
patent: 4358828 (1982-11-01), Reid et al.
patent: 4420814 (1983-12-01), Arikawa et al.
patent: 4445087 (1984-04-01), Mehnert

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