Device for measuring machine speed

摘要

Device for measuring machine speed, in which angular pulses that are generated whenever the crankshaft has rotated by a specific angle are counted by a counter over a predetermined time interval. The count value of the angular pulses is input into a central unit of a digital computer at the end of each stipulated time interval in response to a control signal which both updates the angular pulse count value and signals the central unit to read the count value.