Digital tachometer

Details Digital tachometer Digital tachometer

1983-03-25

1985-10-15

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

377 24, 364200, G01D 356, G06M 306

Patent

active

045477329

ABSTRACT:
A digital tachometer in which first pulses are produced at a rate proportional to the speed of a device. Second pulses are produced at a constant rate which exceeds the maximum rate of the first pulses, and a binary counter provides a binary count of the second pulses produced between two consecutive first pulses. A look-up table memory provides several blocks of addressable storage locations containing digital representations of speed. The MSB of the binary count selects a specific block of the memory, and the address of the selected block is derived from the binary count.

REFERENCES:
patent: 4042068 (1977-08-01), Ostrander
patent: 4085823 (1978-04-01), Caputo
patent: 4101071 (1978-07-01), Brejnik
patent: 4355279 (1982-10-01), Younge

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