Variable frequency missing pulse detector

Details Variable frequency missing pulse detector Variable frequency missing pulse detector

1979-09-04

1982-01-19

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328136, 307519, H03K 519

Patent

active

043119620

ABSTRACT:
A variable frequency missing pulse detector includes a reference signal generator comprising a series connected frequency-to-voltage converter and voltage-to-frequency converter which produces a reference signal with a frequency proportional to the average frequency of a variable frequency source. A pulse generator generates test signal pulses from the source on a cycle-by-cycle basis. A logic circuit compares the reference and test signals and produces a warning signal when a test signal fails to occur during a full cycle of the reference signal.

REFERENCES:
patent: 3204189 (1965-08-01), Trautwein
patent: 3518456 (1970-06-01), Mauduit et al.
patent: 3536935 (1970-10-01), Watson, Jr. et al.
patent: 3569744 (1971-03-01), Garrahan
patent: 3652943 (1972-03-01), Piccirilli et al.
patent: 3906232 (1975-09-01), Meihofer
patent: 4142159 (1979-02-01), Ingram et al.
Electronic Design, "Heartbeat Monitoring Circuit Provides Steady Output and a Missed-Beat Alarm", 12/20/79, pp. 82, 84.
Electronics Missing-Pulse Detector Handles Variable Frequencies by Lyles et al., vol. 52, No. 8, 4/12/79, p. 131.
Burr-Brown Specification Sheet, Voltage-to-Frequency and Frequency-to-Voltage Converter, pp. 1-5, Mar. 1978.
Fairchild Applications Handbook, 1 sheet, "Malfunction Indicator", 1973.
Signetics I. C. Book, 1 sheet, "Missing Pulse Detector", p. 653, 1972.

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