Apparatus and method for monitoring a signal

Details Apparatus and method for monitoring a signal Apparatus and method for monitoring a signal

2005-05-24

2005-05-24

Nguyen, Vinh P. (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Demand, excess, maximum or minimum

C324S1540PB

Reexamination Certificate

active

06897644

ABSTRACT:
An apparatus and a method for monitoring a signal are proposed. The apparatus comprises: a first detector (10) to which the signal is supplied and which, when the signal exceeds the predetermined first threshold value, emits a trigger signal, a second detector (20) to which the signal is also supplied and which, when the signal exceeds the predetermined second threshold value, emits an exceed signal, a signal generator (30) to which the output of the first detector (10) is supplied and which starts to emit a window signal of a predetermined duration as soon as the trigger signal appears at its input side, an AND gate (40) to which the output of the first detector (10) and the output of the signal generator (30) are supplied at its input side and which generates a peak-detection signal when the window signal and the exceed signal are present at its input side. In the method, the following steps are performed cyclically: determining the amplitude of the signal; emitting a peak-detection signal if the amplitude of the signal exceeds a predetermined value within a predetermined time.

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