Method of monitoring equipment and system for carrying out the m

Details Method of monitoring equipment and system for carrying out the m Method of monitoring equipment and system for carrying out the m

1978-03-27

1980-06-24

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73658, G08B 2100

Patent

active

042097797

ABSTRACT:
Method of monitoring equipment wherein a measured value signal in the form of an electrical a-c signal is fed to the measuring channel of an electric circuit and a mean value output signal is formed by the electronic circuit in accordance with the amplitude of the measured value signal, which includes setting an amplitude limit as a function of the mean value signal and the amplitudes of the measured value signal, automatically adapting the amplitude limit with a predetermined time constant to changes in the mean value signal, setting a limit of a number of occurrences when the amplitudes of the measured value signal exceed the amplitude limit, and activating an alarm if the occurrence limit is surpassed within a settable time period, and system for carrying out the method.

REFERENCES:
patent: 3677072 (1972-07-01), Weichbrodt et al.
patent: 3747703 (1973-07-01), Knowd et al.
patent: 4087801 (1978-05-01), Noh

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