Event rate counter

Details Event rate counter Event rate counter

1980-10-14

1982-12-28

Britton, Howard

Registers

Platform operated

Platform actuated traffic counters

235 92FQ, 235 92TF, 324160, 324166, 364767, G01P 348

Patent

active

043663737

ABSTRACT:
An event rate counter for measuring the number of events occurring per unit of time with an input pulse train having a fixed number of pulses per each occurrence of the event, wherein the input pulse train is scaled by a multiplier and divider to provide a direct readout in events-per-unit of time. The input pulse train is amplified and applied to a level detector, the output of which is a logic level pulse train having frequency equal to the frequency of the input signal. The pulse train frequency is monitored by a frequency detector for controlling a commutative switch. For low frequency pulse trains, the switch gates the pulse train from the level detector first to the multiplier, the output of which is gated by the switch to the divider. The multiply-divide sequence order is reversed by the switch for high frequency pulse trains thereby extending the dynamic frequency range of the counter.

REFERENCES:
patent: 3525044 (1970-08-01), Richmond
patent: 3729996 (1973-05-01), Metz
patent: 3748533 (1973-07-01), South
patent: 3764784 (1973-10-01), Haner
patent: 3840724 (1974-10-01), Tripp
patent: 3991368 (1976-11-01), Powell
patent: 4031466 (1977-06-01), Krause
patent: 4074196 (1978-02-01), Webster
patent: 4086532 (1978-04-01), Aronson
patent: 4125295 (1978-11-01), Ruhnau
patent: 4199719 (1980-04-01), Grob

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