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Duration-range-determination-of-incursions-by-a-variable-signal

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Duration range determination of incursions by a variable signal

Details

Inventors: Rudolph, Ralph G.;
Assignee: United States Steel Corporation (Pittsburgh, PA)
Primary Examiner: Heyman; John S.
Assistant Examiner:
Attorney, Agent or Firm: Helm; Rea C.

A circuit for determining the duration range of each incursion by a variable signal on one side of a selected level uses a comparator with a reference crossing level to develop a squared waveform pulse output. Each pulse is integrated and the value gated to a plurality of comparators. The comparators have inhibit interconnections and reference inputs for the desired ranges.

DETAILED DESCRIPTION In accordance with my invention a variable input signal of indeterminate shape is connected to the input of a comparator having a reference crossing level reference input thereby providing a squared wave pulse output.
An integrator provides an intermediate output having a magnitude which is proportional to the width of the comparator pulses.
The integrator output is connected to a plurality of comparators, each one having a reference input proportional to one limit of a desired pulse width range.
The comparators have an inhibit interconnection to set the other limit to each desired range.

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