Frequency spectrum variation monitoring system

Details Frequency spectrum variation monitoring system Frequency spectrum variation monitoring system

1978-04-17

1981-12-01

Smith, Jerry

Boots, shoes, and leggings

324 77B, 324 78D, G06F 1531

Patent

active

043039790

ABSTRACT:
In a frequency spectrum variation monitoring system, the values of two parameters including the root mean square (RMS) value of each of the output signals from various detectors disposed at several locations in a nuclear power plant and the RMS value of the time-differentiated version of the detector output signal are calculated both at the normal state and at any time instant. These parameter values are used to obtain the RMS value of the deviation of the frequency spectrum of the detector output signal from the normal state and the average frequency weighted with that frequency spectrum deviation, so that the geometrical variation in frequency spectrum of the detector output signal may be monitored.

REFERENCES:
patent: 3529140 (1970-09-01), Doering
patent: 3725690 (1973-04-01), Hjorth
patent: 4084245 (1978-04-01), Bunge

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