Digital tachometer

Details Digital tachometer Digital tachometer

G - Physics

01

P

354/32, 364/35

G01P 3/489 (2006.01) G01D 5/244 (2006.01) G01D 5/56 (2006.01)

Patent

CA 1207453

24 ABSTRACT OF THE DISCLOSURE 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.

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