Digital tachometer

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 consecutiv...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HUSSON, ALAN L, TINIOS, PANTELIS G
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	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.